You can define plant IDs that are specific to product sourcing and which your site uses to identify contract manufacturers. Your site can be configured to display contract manufacturers in the Contract MFR column of BOM and material lists. To show values for contract manufacturers, you must map each product sourcing plant ID (PLANT_ID) to an SAP plant ID (PLANT_SAP_ID). SAP Ariba recommends that you use the same value for both types of plant IDs.
When a material is displayed in the product sourcing user interface, SAP Ariba uses the material's SAP plant ID to find the corresponding product sourcing plant ID and displays the name for the product sourcing plant ID (possibly in the Contract MFR column).
When SAP Ariba sends PIR data to SAP, SAP Ariba uses the product sourcing plant ID to find the corresponding SAP plant ID and sends the SAP plant ID in the data.
You define contract manufacturer IDs (Contract MFR IDs) and map them to SAP plant IDs in a CSV file.