Since SRM 5.0 the vendor data is detached from organization structure and now sits in transaction PPOSV_BBP.
Still the principle is valid- only the vendors having purchasing view are replicated in the SRM. ERP is always the leading system (aka source of truth). The initial replication should be carried out by using BBPGETVD. For further update the synchronization report BBP_VENDOR_SYNC. If you wish to bring in your custom fields then you should use BADI.
Vendor master can be modified in SRM and transfer to ECC, allowing business to use SRM as leading system.
A more complex and wide scope requirement can be fitted along with Supplier Lifecycle Management (aka SAP SLC) integration. This integration maps the end-to-end onboarding of the supplier. Also offers the option to maintain the master data in SAP SRM and then distribute to SAP ECC.
Still the principle is valid- only the vendors having purchasing view are replicated in the SRM. ERP is always the leading system (aka source of truth). The initial replication should be carried out by using BBPGETVD. For further update the synchronization report BBP_VENDOR_SYNC. If you wish to bring in your custom fields then you should use BADI.
Vendor master can be modified in SRM and transfer to ECC, allowing business to use SRM as leading system.
A more complex and wide scope requirement can be fitted along with Supplier Lifecycle Management (aka SAP SLC) integration. This integration maps the end-to-end onboarding of the supplier. Also offers the option to maintain the master data in SAP SRM and then distribute to SAP ECC.