How To Fix WP634 - Purchase order generation for material &1, as no open PO can be found

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 634

• Message text: Purchase order generation for material &1, as no open PO can be found

What causes this issue?

The system could not find any open purchase order items for material
&V1& using the existing information on goods receipt items.

System Response

The system automatically creates a purchase order for material &V1& for
this goods receipt item and post the goods receipt, creating a
reference to this purchase order item.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP634 - Purchase order generation for material &1, as no open PO can be found ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WP634 - Purchase order generation for material &1, as no open PO can be found
  
  Meaning / 
  Cause:
  This error occurs during the process of purchase order (PO) generation, typically in the context of production order or process order confirmation, or when trying to create a purchase requisition or PO automatically.
  
  The system tries to find an open purchase order for the specified material (material number &1).
  However, no open purchase order exists for that material in the system.
  This situation can arise if:
  No purchase order has been created yet for the material.
  Existing purchase orders for the material are already closed, fully delivered, or deleted.
  The system is configured to look for an open PO to link or reference, but none is available.
  The material master or procurement settings do not allow automatic PO creation or linking.
  
  
  
  
  When does it typically occur?
  
  During automatic PO generation from production