How To Fix WRF_APC561 - Market buying number is not changeable; you cannot save your change

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 561

• Message text: Market buying number is not changeable; you cannot save your change

What causes this issue?

You tried to change or enter a number for maket buying.

System Response

You cannot change or enter a number because material &V1& occurs in
several purchasing lists or items.

How to fix this error?

You cannot change or enter a number.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_APC561 - Market buying number is not changeable; you cannot save your change ?

  SAP Error Message:
  
  WRF_APC561 Market buying number is not changeable; you cannot save your change
  
  Cause:
  This error occurs when you attempt to change the Market Buying Number in a transaction or master data record where this field is either locked or not allowed to be modified due to system or business logic restrictions.
  Specifically, the Market Buying Number is often a key or reference number linked to purchasing or procurement processes, and once set and saved in certain contexts (e.g., contracts, purchase info records, or specific procurement documents), SAP does not allow it to be changed to maintain data consistency and integrity.
  Common scenarios causing this error include:
  
  Trying to change the Market Buying Number in a purchase info record or contract after it has been saved.
  Attempting to modify the field in a document that is already processed or released.
  The field is controlled by customizing or user-exits/BAdIs that prevent changes after initial entry.
  
  
  Solution:
  
  
  Check the Document Status:
  
  Verify if the document or master data record is in a status that allows changes.
  If the document is released, approved, or processed, you may not be able to change the Market Buying Number.
  
  
  
  Review Business Process:
  
  Confirm whether changing the Market Buying Number is allowed as per your organization's business rules.
  If changes are necessary, you might need to cancel or delete the existing document and create a new one with the correct Market Buying Number.
  
  
  
  Check Customizing and User Exits:
  
  Review if there are any user-exits, BAdIs, or validations implemented that lock this field after initial entry.
  If you have authorization and it is business-justified, these can be adjusted by your SAP development or configuration team.
  
  
  
  Use Correct Transaction or Method:
  
  Some fields can only be changed via specific transactions or processes.
  Consult SAP documentation or your internal process documentation to ensure you are using the correct method.
  
  
  
  Consult SAP Notes:
  
  Search SAP Support Portal for notes related to message WRF_APC561 for any patches or known issues.
  
  
  
  
  Related Information:
  
  Message Class: WRF_APC (related to Advanced Planning and Optimization or Procurement)
  Field: Market Buying Number (often linked to purchasing info records, contracts, or procurement master data)
  Transactions: Could be related to ME11/ME12 (Purchase Info Records), ME31K/ME32K (Contracts), or other procurement-related transactions.
  SAP Modules: MM (Materials Management), SRM (Supplier Relationship Management), or APO (Advanced Planning and Optimization) depending on context.
  
  
  Summary:
  You cannot change the Market Buying Number once it is set and saved in certain SAP documents or master data due to system restrictions designed to maintain data integrity. To resolve the error, verify document status, business rules, and customizing settings. If changes are necessary, consider creating a new record or consult your SAP support team for possible adjustments.
  
  If you provide the exact transaction or context where this error occurs, I can give more tailored advice.