# List unit of measure sets
Source: https://www.desktopaccountingapi.com/docs/api/reference/operations/qbdunitofmeasuresetslist/

`GET https://api.desktopaccountingapi.com/v1/quickbooks-desktop/unit-of-measure-sets`

Operation ID: `qbd.unitOfMeasureSets.list`. Tag: Unit of measure sets.

Returns the unit of measure sets that match your filters. QuickBooks has no cursor for this list, so the response contains every matching unit of measure set at once.

Authentication: `Authorization: Bearer <secret key>`.

## Query parameters

- `ids` (array of string): Return only the unit of measure sets with these QuickBooks IDs. Cannot be combined with names, limit, status, updatedAfter, updatedBefore, nameStartsWith, nameContains, nameEndsWith, nameFrom, nameTo. 1–100 items.
- `names` (array of string): Return only the unit of measure sets with these names (case-insensitive). Cannot be combined with ids, limit, status, updatedAfter, updatedBefore, nameStartsWith, nameContains, nameEndsWith, nameFrom, nameTo. 1–100 items.
- `limit` (integer): Maximum number of unit of measure sets to return. Cannot be combined with ids, names. 1 to ….
- `status` (string): Filter unit of measure sets by active state. Defaults to active ones only. Cannot be combined with ids, names.
- `updatedAfter` (string): Return unit of measure sets changed on or after this date or date-time (QuickBooks local time unless an offset is given). Cannot be combined with ids, names. example `2026-10-05T09:14:03-07:00`.
- `updatedBefore` (string): Return unit of measure sets changed on or before this date or date-time (QuickBooks local time unless an offset is given). Cannot be combined with ids, names. example `2026-10-05T09:14:03-07:00`.
- `nameStartsWith` (string): Return unit of measure sets whose name starts with this text (case-insensitive). Cannot be combined with ids, names, nameFrom, nameTo.
- `nameContains` (string): Return unit of measure sets whose name contains this text (case-insensitive). Cannot be combined with ids, names, nameFrom, nameTo.
- `nameEndsWith` (string): Return unit of measure sets whose name ends with this text (case-insensitive). Cannot be combined with ids, names, nameFrom, nameTo.
- `nameFrom` (string): Return unit of measure sets whose name sorts at or after this value. Cannot be combined with ids, names, nameStartsWith, nameContains, nameEndsWith.
- `nameTo` (string): Return unit of measure sets whose name sorts at or before this value. Cannot be combined with ids, names, nameStartsWith, nameContains, nameEndsWith.

## Headers

- `Daapi-End-User-Id` (string, required): The end user whose QuickBooks company file this request uses. `Conductor-End-User-Id` is accepted as an alias. example `eu_01j9x4m6v4c8k2t7q0r5s3w1zb`.
- `Daapi-Timeout-Seconds` (integer): How long to wait for QuickBooks, in seconds (1–300). `Conductor-Timeout-Seconds` is accepted as an alias. Default 90, or 60 for the health check. If the request has not been sent by then it is canceled (`504 REQUEST_TIMEOUT_NOT_SENT`); if it was sent it keeps running (`504 QBD_REQUEST_TIMEOUT`). 1 to 300; example `90`.
- `Prefer` (string): Send `respond-async` to get `202 Accepted` with a request resource immediately instead of waiting for QuickBooks. always `"respond-async"`; example `respond-async`.
- `Daapi-Queue-Ttl-Seconds` (integer): Async only: the latest time, in seconds from now (10 to 86400), the request may still be sent to QuickBooks. Default 3600. 10 to 86400; example `3600`.

## Responses

### 200

A list of unit of measure sets.

Body (application/json): object (QbdUnitOfMeasureSetList).

- `objectType` (string, required): Always `list`. one of `list`.
- `url` (string, required): The endpoint that produced this list. one of `/v1/quickbooks-desktop/unit-of-measure-sets`.
- `data` (array of object (QbdUnitOfMeasureSet), required): Every matching object.
  - `id` (string, required): QuickBooks-assigned ID of this unit of measure set.
  - `objectType` (string, required): Type of this object. one of `qbd_unit_of_measure_set`.
  - `createdAt` (string (date-time), required): When this unit of measure set was created, as an ISO 8601 date-time with the QuickBooks computer's UTC offset. example `2026-10-05T09:14:03-07:00`.
  - `updatedAt` (string (date-time), required): When this unit of measure set was last changed, as an ISO 8601 date-time with the QuickBooks computer's UTC offset. example `2026-10-05T09:14:03-07:00`.
  - `revisionNumber` (string, required): Current revision of this unit of measure set. Send it unchanged when updating; a stale value is rejected.
  - `name` (string, nullable, required): Name of this unit of measure set, unique within its parent level.
  - `isActive` (boolean, nullable, required): Whether this unit of measure set is active. Inactive objects stay in QuickBooks but are hidden from most lists.
  - `unitOfMeasureType` (string, nullable, required): Unit of measure type of this unit of measure set. one of `area`, `count`, `length`, `other`, `time`, `volume`, `weight` (open: accept unknown values).
  - `baseUnit` (object (QbdBaseUnit), nullable, required): Base unit details for this unit of measure set.
    - `name` (string, nullable, required): Name of this base unit, unique within its parent level.
    - `abbreviation` (string, nullable, required): Abbreviation of this base unit.
  - `relatedUnits` (array of object (QbdRelatedUnit), required): Related units entries for this unit of measure set.
    - `name` (string, nullable, required): Name of this related unit, unique within its parent level.
    - `abbreviation` (string, nullable, required): Abbreviation of this related unit.
    - `conversionRatio` (string, nullable, required): Conversion ratio of this related unit. Decimal string with up to 5 decimal places. example `19.99`.
  - `defaultUnits` (array of object (QbdDefaultUnit), required): Default units entries for this unit of measure set.
    - `unitUsedFor` (string, nullable, required): Unit used for of this default unit. one of `purchase`, `sales`, `shipping` (open: accept unknown values).
    - `unit` (string, nullable, required): Unit of this default unit.

### 202

Accepted in async mode (`Prefer: respond-async`). Poll `Location` or wait for a webhook; the request's `result` holds the success body.

Body (application/json): object (Request).

- `id` (string, required): Unique identifier for the request. example `req_01j9x4m6v4c8k2t7q0r5s3w1zd`.
- `objectType` (string, required): Always `request`. one of `request`.
- `createdAt` (string (date-time), required): When the request was received. UTC, ISO 8601 with milliseconds. example `2026-10-05T16:03:59.002Z`.
- `projectId` (string, required): Unique identifier for the project. example `proj_01j9x4m6v4c8k2t7q0r5s3w1zf`.
- `endUserId` (string, required): Unique identifier for the end user. example `eu_01j9x4m6v4c8k2t7q0r5s3w1zb`.
- `connectionId` (string, nullable, required): The connection that carried the request; null when the call was rejected before the end user had a connection (no setup link created yet). example `conn_01j9x4m6v4c8k2t7q0r5s3w1zc`.
- `operationId` (string, required): The API operation, for example `endUsers.passthrough` or `qbd.healthCheck`. example `qbd.healthCheck`.
- `method` (string, required): HTTP method of the original call. example `GET`.
- `path` (string, required): Path of the original call. example `/v1/quickbooks-desktop/health-check`.
- `mode` (string, required): `sync` when the caller waited for the result. one of `sync`, `async` (open: accept unknown values).
- `status` (string, required): `queued`: accepted and waiting for its turn or the next Web Connector check-in. `waiting_for_connection`: async request waiting for an offline connection. `sent`: handed to QuickBooks; it can no longer be canceled. `succeeded` and `failed` are final. `canceled`: canceled before it was sent. `outcome_unknown`: a write was sent and its result could not be confirmed. one of `queued`, `waiting_for_connection`, `sent`, `succeeded`, `failed`, `canceled`, `outcome_unknown` (open: accept unknown values).
- `outcome` (string, required): Whether a write took effect: `applied` (QuickBooks confirmed it), `not_applied` (it certainly did not happen), `pending` (sent, still processing), `unknown` (sent, result could not be confirmed) or `not_applicable` (a read). one of `applied`, `not_applied`, `pending`, `unknown`, `not_applicable` (open: accept unknown values).
- `sentAt` (string, nullable, required): When the request was handed to the Web Connector. UTC, ISO 8601.
- `completedAt` (string, nullable, required): When the request reached a final status. UTC, ISO 8601.
- `durationMs` (integer, nullable, required): Milliseconds from creation to completion.
- `idempotencyKeyPresent` (boolean, required): Whether the call sent an Idempotency-Key.
- `previousRequestId` (string, nullable, required): An earlier request with the same Idempotency-Key that ended before reaching QuickBooks.
- `waitingReason` (string, nullable, required): Why a queued request is waiting. `quickbooks_not_responding`: the Web Connector started a session but QuickBooks has not answered it (usually a QuickBooks dialog is open; see `diagnosis`). `null` once the request was sent. one of `awaiting_check_in`, `behind_other_requests`, `opening_company_file`, `quickbooks_starting`, `connector_offline`, `quickbooks_unavailable`, `quickbooks_not_responding`, `write_recovery_pending`, `null` (open: accept unknown values).
- `queuePosition` (integer, nullable, required): Position in this connection's queue (1 = next), while queued.
- `queueTtlExpiresAt` (string, nullable, required): Async requests only: the latest time the request may still be sent. UTC, ISO 8601.
- `timings` (object, required): Where the time went.
  - `queuedMs` (integer, nullable, required): Milliseconds from creation until the request was sent to QuickBooks.
  - `quickbooksMs` (integer, nullable, required): Milliseconds from sending until QuickBooks answered.
  - `totalMs` (integer, nullable, required): Milliseconds from creation to completion.
- `quickbooks` (object, required): Native QuickBooks details.
  - `qbxmlVersion` (string, nullable, required): qbXML version used.
  - `messageSetId` (string, nullable, required): qbXML `newMessageSetID` sent with a write.
  - `statusCode` (integer, nullable, required): qbXML statusCode of the first response element.
  - `statusSeverity` (string, nullable, required): qbXML statusSeverity (`Info`, `Warn` or `Error`).
- `warnings` (array of object (RequestWarning), required): QuickBooks warnings (`statusSeverity="Warn"`) and values the API read leniently from a damaged company file. The response body never drops a record for these; affected values are null.
  - `code` (string, required): `QBD_WARNING` for a QuickBooks warning status; `QBD_VALUE_UNREADABLE` when a value in the response was garbled and is returned as null; `QBD_MARKUP_REPAIRED` when malformed XML text was kept as text. one of `QBD_WARNING`, `QBD_VALUE_UNREADABLE`, `QBD_MARKUP_REPAIRED` (open: accept unknown values).
  - `statusCode` (integer, nullable, required): qbXML statusCode of a QuickBooks warning; null for warnings about the response data.
  - `message` (string, required): What happened, including the text QuickBooks sent for unreadable values.
  - `path` (string, nullable, required): Where in `result` the affected value is, such as `data[2].lines[0].amount`; null for QuickBooks warning statuses.
- `recovered` (boolean, required): `true` when an `outcome_unknown` write was resolved by asking QuickBooks for its stored result.
- `timeline` (array of object (RequestTimelineEntry), required): Lifecycle steps in order.
  - `at` (string (date-time), required): When the step happened. UTC, ISO 8601 with milliseconds. example `2026-10-05T16:03:59.002Z`.
  - `status` (string, required): Step, usually a status (`queued`, `waiting`, `sent`, `succeeded`, `diagnosed`, ...).
  - `detail` (string, nullable, required): Extra detail, for example the waiting reason or diagnosis cause.
  - `elapsedMs` (integer, required): Milliseconds since the request was created.
- `diagnosis` (object (RequestDiagnosis), nullable, required): Probable causes while the request waits or runs long, and for requests that timed out or expired before they were sent; `null` otherwise.
  - `at` (string (date-time), required): When the diagnosis was made. UTC, ISO 8601 with milliseconds. example `2026-10-05T16:03:59.002Z`.
  - `summary` (string, required): The most likely cause in one line. example `QuickBooks Desktop probably has a dialog window open.`.
  - `connector` (object, required): What the server observed about the end user's Web Connector.
    - `lastSeenAt` (string, nullable, required): Last sign of the Web Connector (a check-in or a call inside a session). UTC, ISO 8601.
    - `lastCheckInAt` (string, nullable, required): Last Web Connector check-in. UTC, ISO 8601.
    - `checkInIntervalSeconds` (integer, nullable, required): Typical interval between recent check-ins, in seconds.
    - `silentForSeconds` (integer, nullable, required): Seconds since `lastSeenAt`.
    - `sessionOpen` (boolean, required): Whether a Web Connector session is open now.
    - `sessionOpenedAt` (string, nullable, required): When the open session started. UTC, ISO 8601.
    - `quickbooksAnswered` (boolean, nullable, required): Whether QuickBooks answered the open session; `null` without a session.
    - `silentSessions` (integer, required): Recent consecutive sessions in which QuickBooks never answered.
    - `lastConnectionErrorCode` (string, nullable, required): Error code of the latest QuickBooks connection error, while it persists.
  - `probableCauses` (array of object (DiagnosisCause), required): Probable causes, most likely first.
    - `code` (string, required): Stable cause code. New codes may be added. one of `quickbooks_modal_dialog`, `web_connector_registration_lost`, `quickbooks_starting`, `other_web_connector_app`, `web_connector_closed`, `computer_offline`, `web_connector_schedule_changed`, `quickbooks_closed_no_unattended_access`, `quickbooks_unavailable`, `wrong_company_file`, `write_recovery_pending`, `behind_other_requests`, `quickbooks_processing`, `session_interrupted`, `same_connector_two_computers`, `awaiting_check_in` (open: accept unknown values); example `quickbooks_modal_dialog`.
    - `likelihood` (string, required): How strongly the observations point at this cause. one of `high`, `medium`, `low` (open: accept unknown values).
    - `summary` (string, required): One-line description of the cause.
    - `explanation` (string, required): What the server observed and why it points at this cause.
    - `fixes` (array of object (ErrorFix), required): Actions that resolve the cause, each with the responsible actor.
    - `details` (object, required): Cause-specific observations, for example `connectionErrorCode` or `silentForMs`.
    - `docsUrl` (string (uri), required): Troubleshooting section for this cause.
- `error` (object (Error), nullable, required): The error, when the request failed, was canceled, timed out or has an unknown outcome.
  - `type` (string, required): Error category. Use it to choose between retrying, fixing the request and asking the end user to act. one of `INVALID_REQUEST_ERROR`, `AUTHENTICATION_ERROR`, `PERMISSION_ERROR`, `BILLING_ERROR`, `RATE_LIMIT_ERROR`, `INTEGRATION_CONNECTION_ERROR`, `INTEGRATION_ERROR`, `OUTCOME_UNKNOWN_ERROR`, `INTERNAL_ERROR` (open: accept unknown values).
  - `code` (string, required): Stable error code from the error catalog. New codes may be added; a code's meaning never changes. one of `INVALID_JSON`, `INVALID_PARAMETER`, `UNKNOWN_PARAMETER`, `UNKNOWN_HEADER`, `DECIMAL_PRECISION_EXCEEDED`, `STRING_TOO_LONG`, `UNSUPPORTED_CHARACTER`, `FIELD_NOT_CLEARABLE`, `END_USER_ID_MISSING`, `PAYLOAD_TOO_LARGE`, `IDEMPOTENCY_KEY_INVALID`, `IDEMPOTENCY_KEY_REUSED`, `CURSOR_INVALID`, `CURSOR_PARAMS_MISMATCH`, `CURSOR_EXPIRED`, `RESOURCE_MISSING`, `REQUEST_NOT_CANCELABLE`, `PASSTHROUGH_INVALID_QBXML`, `QBD_FIELD_UNSUPPORTED_BY_VERSION`, `QBD_REGION_UNSUPPORTED`, `API_KEY_MISSING`, `API_KEY_INVALID`, `PUBLISHABLE_KEY_INVALID`, `PUBLISHABLE_KEY_PROJECT_MISMATCH`, `TEST_COMPANY_FILE_LIMIT_REACHED`, `API_KEY_READ_ONLY`, `PERMISSION_DENIED`, `BILLING_REQUIRED`, `PAYMENT_FAILED`, `RATE_LIMITED`, `CONNECTION_QUEUE_FULL`, `WEBHOOK_ENDPOINT_LIMIT_REACHED`, `INTEGRATION_CONNECTION_NOT_SET_UP`, `INTEGRATION_CONNECTION_NOT_ACTIVE`, `INTEGRATION_CONNECTION_DISABLED`, `QBD_CONNECTION_ERROR`, `QBD_CANNOT_START`, `QBD_STARTING`, `QBD_MODAL_DIALOG_OPEN`, `QBD_QUICKBOOKS_NOT_RESPONDING`, `QBD_WRONG_COMPANY_FILE_OPEN`, `QBD_COMPANY_FILE_MISMATCH`, `QBD_COMPANY_FILE_NOT_FOUND`, `QBD_FILE_MODE_CONFLICT`, `QBD_ADMIN_REQUIRED`, `QBD_ACCESS_NOT_GRANTED`, `QBD_VERSION_UNSUPPORTED`, `QBD_REQUEST_ERROR`, `QBD_OBJECT_NOT_FOUND`, `QBD_REFERENCE_NOT_FOUND`, `QBD_DUPLICATE_NAME`, `QBD_REVISION_NUMBER_STALE`, `QBD_OBJECT_IN_USE`, `QBD_FEATURE_NOT_ENABLED`, `QBD_INSUFFICIENT_PERMISSION`, `QBD_RESPONSE_TOO_LARGE`, `QBD_OPERATION_UNSUPPORTED`, `QBD_RESPONSE_UNREADABLE`, `REQUEST_TIMEOUT_NOT_SENT`, `REQUEST_EXPIRED`, `REQUEST_CANCELED`, `QBD_REQUEST_TIMEOUT`, `QBD_WRITE_OUTCOME_UNKNOWN`, `QBD_READ_INTERRUPTED`, `INTERNAL_ERROR`, `SERVICE_UNAVAILABLE` (open: accept unknown values); example `QBD_MODAL_DIALOG_OPEN`.
  - `message` (string, required): Developer-facing explanation. May include IDs and field paths; never includes secrets.
  - `userFacingMessage` (string, required): A message that is safe to show to the end user.
  - `httpStatusCode` (integer, nullable, required): HTTP status of the response. `null` for codes that appear only on a request resource (`REQUEST_EXPIRED`, `REQUEST_CANCELED`). example `503`.
  - `integrationCode` (string, nullable, required): Native QuickBooks code when one exists: a qbXML statusCode (`"3200"`), an HRESULT (`"0x80040414"`) or a Web Connector code. example `0x80040414`.
  - `requestId` (string, required): The `Daapi-Request-Id` of this response. Include it when contacting support. example `req_01j9x4m6v4c8k2t7q0r5s3w1zd`.
  - `cause` (string, required): Why this error happens.
  - `fixes` (array of object (ErrorFix), required): Ordered actions that resolve the error, each with the responsible actor.
    - `actor` (string, required): Who can apply the fix. one of `developer`, `end_user`, `support` (open: accept unknown values).
    - `action` (string, required): What to do.
  - `docsUrl` (string (uri), required): Documentation section for this code. example `https://www.desktopaccountingapi.com/docs/errors/#qbd_modal_dialog_open`.
  - `retryable` (boolean, required): Repeating the identical request (with the same Idempotency-Key for writes) can succeed without changes. Also sent as the `Daapi-Should-Retry` header.
  - `outcome` (string, required): Whether a write took effect: `applied` (QuickBooks confirmed it), `not_applied` (it certainly did not happen), `pending` (sent, still processing), `unknown` (sent, result could not be confirmed) or `not_applicable` (a read). one of `applied`, `not_applied`, `pending`, `unknown`, `not_applicable` (open: accept unknown values).
  - `param` (string, nullable, required): Request field, query parameter or header the error refers to, when known. example `companyName`.
  - `details` (object, required): Code-specific details, documented per code in the error catalog.
- `result` (any): The response body the original call returned (or would have returned) on success; `null` otherwise.
- `resultExpired` (boolean, required): `true` when the result existed but is past the payload retention period (15 days, or 24 hours with payload capture off).

### Errors

Every error body is the error object described at https://www.desktopaccountingapi.com/docs/errors/.

- `400`: The request is invalid. Codes: `UNKNOWN_HEADER`, `END_USER_ID_MISSING`, `INVALID_PARAMETER`, `UNKNOWN_PARAMETER`, `CURSOR_INVALID`, `CURSOR_PARAMS_MISMATCH`.
- `401`: The API key is missing or invalid. Codes: `API_KEY_MISSING`, `API_KEY_INVALID`.
- `402`: Billing blocks production data requests. Codes: `BILLING_REQUIRED`, `PAYMENT_FAILED`.
- `403`: The operation is not permitted. Codes: `INTEGRATION_CONNECTION_DISABLED`, `PERMISSION_DENIED`, `QBD_INSUFFICIENT_PERMISSION`.
- `404`: The object does not exist in this project. Codes: `RESOURCE_MISSING`.
- `409`: The request conflicts with the current state. Codes: `INTEGRATION_CONNECTION_NOT_SET_UP`, `QBD_COMPANY_FILE_MISMATCH`.
- `410`: The cursor expired. Codes: `CURSOR_EXPIRED`.
- `422`: The request is well formed but cannot be processed. Codes: `QBD_FIELD_UNSUPPORTED_BY_VERSION`, `QBD_REGION_UNSUPPORTED`, `QBD_REQUEST_ERROR`, `QBD_FEATURE_NOT_ENABLED`, `QBD_RESPONSE_TOO_LARGE`.
- `429`: Too many requests. Codes: `RATE_LIMITED`, `CONNECTION_QUEUE_FULL`.
- `500`: Unexpected server error. Codes: `INTERNAL_ERROR`.
- `502`: The result could not be confirmed. Codes: `QBD_READ_INTERRUPTED`.
- `503`: QuickBooks Desktop or the service is not available. Codes: `SERVICE_UNAVAILABLE`, `INTEGRATION_CONNECTION_NOT_ACTIVE`, `QBD_CONNECTION_ERROR`, `QBD_CANNOT_START`, `QBD_STARTING`, `QBD_MODAL_DIALOG_OPEN`, `QBD_QUICKBOOKS_NOT_RESPONDING`, `QBD_WRONG_COMPANY_FILE_OPEN`, `QBD_COMPANY_FILE_NOT_FOUND`, `QBD_FILE_MODE_CONFLICT`, `QBD_ADMIN_REQUIRED`, `QBD_ACCESS_NOT_GRANTED`, `QBD_VERSION_UNSUPPORTED`.
- `504`: The request timed out. Codes: `REQUEST_TIMEOUT_NOT_SENT`, `QBD_REQUEST_TIMEOUT`.