1.) Each plant has its own project nomenclature.
Example: Plant code-MB01,
Allowed Project codes for the same are-MT-XXX-001(At Tendering stage)
ME-XXX-001(At Execution stage)
2.) My simple requirement is, SAP System should not allow other than, these combinations of Plant & Project coding at MM transactions (like purchase requisition, contract, purchase order, Goods Receipt/ Goods Issue
Hope there is a possibility to get control of the same, request you suggest the same.