How To Fix WP631 - Supplier must be entered for automatic purchase order generation

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 631

• Message text: Supplier must be entered for automatic purchase order generation

What causes this issue?

You must state a supplier so that a purchase order for material &V1& can
be automatically generated in the backgroud.

System Response

You can state the supplier for a goods receipt item by using the
following transaction.
The transaction is started immediately after this information screen and
is supplied with values taken from the goods receipt interface.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP631 - Supplier must be entered for automatic purchase order generation ?

  Certainly! Here's a detailed explanation for the SAP error message WP631: "Supplier must be entered for automatic purchase order generation":
  
  Error Message: WP631
  Text: Supplier must be entered for automatic purchase order generation
  
  Cause:
  This error occurs during the automatic purchase order (PO) generation process (e.g., using transaction ME59N or background jobs for automatic PO creation) when the system tries to create a PO but no supplier (vendor) is assigned or determined for the purchase requisition or outline agreement item.
  In other words, the system requires a vendor to be specified to generate a PO automatically. If the vendor field is empty or the system cannot find a valid vendor for the item, it throws this error.
  Common reasons include:
  
  The purchase requisition or contract item does not have a vendor assigned.
  The info record or source list is missing or not maintained for the material and plant combination.
  The source determination process fails to find a valid vendor.
  The vendor master data is incomplete or blocked.
  The automatic source determination is not properly configured.
  
  
  Solution:
  To resolve the WP631 error, you need to ensure that a valid supplier/vendor is assigned or can be determined for the purchase requisition or contract item before automatic PO generation.
  Steps to fix:
  
  
  Check Purchase Requisition or Contract:
  
  Open the purchase requisition or contract item.
  Verify if the vendor field is filled.
  If not, assign a vendor manually or ensure source determination can find one.
  
  
  
  Maintain Source List:
  
  Use transaction ME01 to maintain source lists for the material and plant.
  Ensure that the source list contains valid vendors and is valid for the current date.
  
  
  
  Maintain Info Record:
  
  Use transaction ME11 to create or update purchasing info records for the material and vendor.
  Info records help the system determine the vendor automatically.
  
  
  
  Check Automatic Source Determination:
  
  Ensure that the system is configured to determine the source automatically.
  Check the settings in the purchase requisition or contract item.
  
  
  
  Vendor Master Data:
  
  Verify that the vendor master record is active and not blocked for purchasing.
  Use transaction XK03 or MK03 to check vendor status.
  
  
  
  Re-run Automatic PO Generation:
  
  After correcting the vendor assignment, re-run the automatic PO generation (e.g., ME59N).
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  ME59N – Automatic PO generation
  ME01 – Maintain Source List
  ME11 – Create Purchasing Info Record
  ME52N – Change Purchase Requisition
  ME33K – Display Contract
  XK03 / MK03 – Display Vendor Master
  
  
  
  SAP Notes:
  
  Check SAP Notes related to automatic PO generation and source determination if the problem persists.
  
  
  
  Configuration:
  
  Source determination settings in IMG under Materials Management ? Purchasing ? Source Determination.
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WP631: Supplier must be entered for automatic purchase order generation
  
  
  Cause
  No vendor assigned or found for the purchase requisition or contract item
  
  
  Solution
  Assign vendor manually or maintain source list/info record to enable automatic source determination
  
  
  Key Transactions
  ME59N, ME01, ME11, ME52N, XK03
  
  
  
  
  If you need help with specific steps or screenshots, feel free to ask!