The Vendor Management Module 
currently is being populated from the BOM and Item Master data from the Assembly Planner Components module. The Components module can receive item master data from ERP/MRP systems, including primary supplier fields and details. Costing data can also be received from other systems.
The vendor management module displays relevant supplier and costing information for easy access, though users do not typically edit or manipulate data in the module. If the data is not automatically received from other systems, the spreadsheet is editable so data can be copied and pasted from Excel.
The Suppliers tab is used to create the specific suppliers using their ID as well as information about location, contacts, and lead time.
Suppliers Tab
The Supplier Item Mapping tab is used to associate Item IDs (importable from a .txt or .csv file using the 
button) with their Suppliers.
Supplier Item Mapping Tab