v2
latestSwagger 2.02026-08-04108164321.0 KBFileAttachment
Uploads a single file via multipart/form-data. Send the file in a "file" form field. Optional query parameters linkToEntityType + linkToEntityId inline-link the upload to a Task, Expense, Estimate, or Invoice in the same call. When no link is supplied, the row is inserted as AttachmentType="Draft" and reaped by the cleanup job after 24 hours if never linked.
post/api/FileAttachment
Query parameters
linkToEntityTypestring
Optional. One of: "Task", "Expense", "Estimate", "Invoice". When supplied, linkToEntityId must also be supplied.
linkToEntityIdinteger
Optional. The target entity's primary key. Required when linkToEntityType is supplied.
Response
Returns the uploaded file attachment details.