FixedAmount
Updates an existing fixed-amount billing entry. Only fields listed in the FieldsToUpdate array will be modified. Valid field names: Amount, InventoryItemIDFK, Notes.
Fixed amounts that have already been invoiced cannot be updated. Remove the linked invoice line first to release the record. TaskIDFK and ProjectIDFK cannot be changed — to move a fixed amount, delete it and create a new one.
put/api/FixedAmount
Request body
Response
Returns the updated fixed-amount entry.