Here we would like to draw your attention to ZI_STK_CUST transaction code in SAP. As we know it is being used in the SAP PM (Plant Maintenance) module. ZI_STK_CUST is a transaction code used for Maintain Project Manager in SAP.
It comes under the package ZI_STK.
Transaction ZI_STK_CUST technical data table
|Purpose||Maintain Project Manager|