How To Fix WP601 - Several open POs found for GR: material &, plant &

WP601 - Overview

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 601

• Message text: Several open POs found for GR: material &, plant &

What causes this issue?

A number of open purchase orders were found for this material and
store.

How to fix this error?

Using the following transaction, select the correct PO item for the
corresponding GR item.
The transaction will appear automatically when you leave this screen
and the values filled from the GR interface.

Error message extract from SAP system. Copyright SAP SE.

WP601 - Details

• Certainly! Here's a detailed explanation for the SAP error message WP601: Several open POs found for GR: material &, plant &:
  
  Error Message
  WP601: Several open POs found for GR: material &, plant &
  
  Cause
  This error occurs during the Goods Receipt (GR) process when the system tries to post a goods receipt for a material and plant combination, but finds multiple open Purchase Orders (POs) for the same material and plant. The system cannot determine unambiguously which PO the goods receipt should be posted against.
  In other words, the system expects a single open PO for the material and plant, but multiple POs are open, causing ambiguity.
  
  When does it occur?
  
  During Goods Receipt (MIGO) or Inbound Delivery processing.
  When the system tries to automatically assign the PO for the GR but finds more than one open PO for the same material and plant.
  Typically happens if multiple POs exist for the same material and plant, and the