Hi everyone. I am hoping that someone can help me find the cause of my issue.
I am trying to setup reason code, so when an inventory item is issued to project task, it uses the subaccounts from default cost subaccount of the project task.
I am following this documentation below. but so far unsuccessfully. When I set combine Sub From box to TTTTTT, it says “TTTTTT does not exist in the system”. Subaccount segment key is set to 6 characters.

Could someone please point me to the right direction?
Much appreciated.
Best Regards