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curl --request GET \ --url 'https://api.businesscentral.dynamics.com/v2.0/<tenant-id>/Production/api/v1.0/companies(<company-id>)/items(<item-id>)?%24expand=itemCategory%2Cpicture%2CdefaultDimensions%2CitemVariants' \ --header 'Authorization: Bearer <auth-token>'
curl --request GET \ --url 'https://api.businesscentral.dynamics.com/v2.0/<tenant-id>/Production/api/v1.0/companies(<company-id>)/items(<item-id>)?%24expand=unitOfMeasure%2CitemCategory%2Cpicture%2CdefaultDimensions%2CitemVariants' \ --header 'Authorization: Bearer <auth-token>'
{ "error": { "code": "BadRequest", "message": "Could not find a property named 'unitOfMeasure' on type 'Microsoft.NAV.item'. CorrelationId: e5f99925-8842-4ccc-9295-13406d0e7cef." } }
unitOfMeasure
$expand
baseUnitOfMeasure
$select
The issue isn’t with your request or token — the problem is that the unitOfMeasure navigation property is not actually exposed in the standard Business Central API, even though it's listed in the official documentation.
You can confirm this by checking the $metadata endpoint, which shows the actual structure and available properties of the API.
$metadata
As a workaround, either use available fields like baseUnitOfMeasureCode, or create a custom API page in AL that includes unitOfMeasure as a navigation property if you need that relationship. Unfortunately, some navigation properties in the docs are planned or internal but not implemented in the public API.
baseUnitOfMeasureCode
Under review
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