How To Fix ME520 - No comparison possible

SAP Error Message - Details

• Message type: E = Error

• Message class: ME - Purchasing: General Messages

• Message number: 520

• Message text: No comparison possible

What causes this issue?

Either no releases of the relevant type have yet been generated against
this scheduling agreement, or releases have been generated but not yet
transmitted to the component supplier.

System Response

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

How to fix this error?

Check the delivery schedule release documentation to see whether
releases have been generated and transmitted:
<DS:TRAN.ME39>Display scheduling agreement delivery schedule</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ME520 - No comparison possible ?

  The SAP error message ME520 "No comparison possible" typically occurs in the context of purchasing documents, particularly when trying to compare purchase orders with other documents like contracts or scheduling agreements. This error can arise due to various reasons, and understanding the cause is essential for finding a solution.
  Causes:
  
  Missing or Inconsistent Data: The purchasing documents may not have the necessary data for comparison, such as missing conditions, pricing, or item details.
  Document Type Issues: The document types involved in the comparison may not be compatible or may not allow for comparison.
  Status of Documents: One or more of the documents may be in a status that does not allow for comparison (e.g., a document is not yet released).
  Different Item Categories: The items being compared may belong to different categories that do not allow for comparison.
  Configuration Issues: There may be configuration settings in the SAP system that prevent the comparison from being made.
  
  Solutions:
  
  Check Document Data: Review the purchase orders and other documents involved in the comparison to ensure that all necessary data is present and consistent.
  Verify Document Types: Ensure that the document types being compared are compatible and that they allow for comparison.
  Check Document Status: Make sure that all documents are in a status that allows for comparison. If any document is not released or is in a blocked status, it may need to be addressed.
  Review Item Categories: Ensure that the items being compared belong to the same category and that they are eligible for comparison.
  Configuration Review: Consult with your SAP configuration team to review the settings related to purchasing documents and comparisons. Adjustments may be needed to allow for the comparison.
  Use Transaction ME53N: If you are trying to compare a purchase requisition, use transaction ME53N to check the details of the requisition and ensure everything is correct.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Documentation: Review SAP documentation related to purchasing and document comparisons for further insights.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth analysis and assistance.