How To Fix MMPUR_POHANDLER_TECH008 - When changing &1 you may not set key fields in DATAX structure.

SAP Error Message - Details

• Message type: E = Error

• Message class: MMPUR_POHANDLER_TECH - Technical PO Handler Messages

• Message number: 008

• Message text: When changing &1 you may not set key fields in DATAX structure.

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MMPUR_POHANDLER_TECH008 - When changing &1 you may not set key fields in DATAX structure. ?

  The SAP error message MMPUR_POHANDLER_TECH008 typically occurs when there is an attempt to change key fields in the DATAX structure of a purchase order (PO) in the SAP system. This error is related to the handling of purchase orders in the Materials Management (MM) module.
  Cause:
  The error arises when a user tries to modify certain key fields in the DATAX structure of a purchase order. Key fields are fields that uniquely identify a record in a database table, and in the context of a purchase order, these might include fields like the purchase order number, vendor, or item number. The system restricts changes to these fields to maintain data integrity and consistency.
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Identify Key Fields: Determine which fields in the DATAX structure you are trying to change. Common key fields include:
  
  Purchase Order Number
  Vendor
  Item Number
  
  
  
  Avoid Changing Key Fields: Ensure that you are not attempting to change any of these key fields when making updates to the purchase order. If you need to change a key field, you may need to create a new purchase order instead of modifying the existing one.
  
  
  Check User Permissions: Ensure that you have the necessary permissions to make changes to the purchase order. Sometimes, restrictions may be in place based on user roles.
  
  
  Review Custom Code: If you are using custom code or enhancements (like user exits or BAdIs), review them to ensure they are not inadvertently trying to change key fields.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on handling purchase orders and the DATAX structure.
  
  
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME22N (Change Purchase Order) and ME23N (Display Purchase Order) to understand how to navigate and manage purchase orders.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Training: Consider training sessions or resources on SAP MM module functionalities to better understand how to manage purchase orders effectively.
  
  By following these steps, you should be able to resolve the error and successfully manage your purchase orders in SAP.