How To Fix /SAPAPO/OM_UPGRADE426 - Differences found for pattern chain &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_UPGRADE -

• Message number: 426

• Message text: Differences found for pattern chain &1

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 /SAPAPO/OM_UPGRADE426 - Differences found for pattern chain &1 ?

  The SAP error message /SAPAPO/OM_UPGRADE426 Differences found for pattern chain &1 typically occurs during the upgrade or migration process in SAP Advanced Planning and Optimization (APO). This error indicates that there are discrepancies between the existing pattern chain data and the expected data structure or content after an upgrade.
  Cause:
  
  Data Inconsistencies: The error usually arises due to inconsistencies in the pattern chain data that were not resolved before the upgrade.
  Changes in Data Structure: The upgrade may have introduced changes in the data structure or logic that the existing pattern chains do not comply with.
  Custom Developments: If there are custom developments or modifications in the pattern chain logic, these may not align with the new version's requirements.
  
  Solution:
  
  Analyze the Differences: Use transaction /SAPAPO/OM_UPGRADE to analyze the differences in the pattern chain. This transaction can help identify what specific discrepancies exist.
  Adjust Pattern Chains: Based on the analysis, you may need to adjust the pattern chains to align with the new structure or requirements. This could involve modifying existing chains or creating new ones.
  Data Cleanup: Ensure that any obsolete or incorrect data is cleaned up before the upgrade. This may involve deleting or archiving old pattern chains that are no longer needed.
  Consult Documentation: Review the upgrade documentation provided by SAP for any specific instructions related to pattern chains and APO.
  Testing: After making adjustments, conduct thorough testing to ensure that the pattern chains function correctly in the upgraded environment.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on resolving it.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/OM_UPGRADE for analyzing and resolving upgrade issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, especially if you have a support contract.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the discrepancies causing the /SAPAPO/OM_UPGRADE426 error message.