Here we would like to draw your attention to OPTT transaction code in SAP. As we know it is being used in the SAP PS (Project Systems) module. OPTT is a transaction code used for Maint. acct.assgnm.types for orders in SAP.
It comes under the package CNPC.
Transaction OPTT technical data table
|Purpose||Maint. acct.assgnm.types for orders|