API to issue material does not default lot number following plant paramters

Summary:

Use API materialTransactions or operationTransactions for WIP Material Issue but without having to enter lot number.

Content (please ensure you mask any confidential information):

Hi,

We would like to use APIs to execute work orders.

Customer wants to issue material without having to specify lot numbers, and let the system default it. Since this is a setup in Manage Plant Parameters and only for lot selection during backflush, I am guessing it is only usable from operationTransactions API.

However, when I try to do so without entering the lot number, I have these messages:

"ErrorMessages": "The product lot quantity must equal the transaction quantity.", "ErrorMessageNames": "WIE_WOOT_INVALID_LOTQ",