Create load reference
Create a custom reference on an existing load by load number, optionally tied to a tenant catalog definition, with values up to 40 characters.
If-Match header; the server retries bounded concurrency conflicts internally. The response includes a refreshed load ETag you can carry into a later update.
Requires load:update.
See Updating records safely for how create and update differ on this surface.
Path parameters
Request body
Example
Status codes
Authorizations
OAuth 2.0 client-credentials access token. Obtain one from https://auth.alvys.com/oauth/token (grant_type=client_credentials, audience=https://api.alvys.com/public/), then paste it here. The playground sends it as Authorization: Bearer <token>.
Path Parameters
API version (e.g., 2.0)
"2.0"
Body
Reference name. Must be 50 characters or fewer. For catalog-backed writes, must match the configured definition name.
50Reference value. Must be 40 characters or fewer — enough for a 36-character CFDI folio UUID. OrderNumber and PONumber stay at the X12 30-character bound and are unchanged by this field.
40Optional tenant catalog definition id from List custom reference definitions. When set, the value is validated against that definition.