How To Fix UD642 - Relationship from & to & (field &) cannot be displayed

SAP Error Message - Details

• Message type: E = Error

• Message class: UD - EDM - Enterprise Data Model

• Message number: 642

• Message text: Relationship from & to & (field &) cannot be displayed

What causes this issue?

There are more than 90 relationships between the check table and the
foreign key table. For technical reasons, no more than 90 relationships
with the same check and foreign key table can be currently displayed in
the Dictionary graphic. The specified relationship can therefore not be
displayed graphically.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UD642 - Relationship from & to & (field &) cannot be displayed ?

  The SAP error message UD642, which states "Relationship from & to & (field &) cannot be displayed," typically occurs in the context of using the SAP system for managing master data, particularly in the area of object relationships (like business partners, materials, etc.). This error indicates that the system is unable to display a specific relationship due to various reasons.
  Causes:
  
  Missing Data: The relationship data might be missing or not properly maintained in the system.
  Incorrect Configuration: The configuration settings for the relationship type may not be set up correctly.
  Authorization Issues: The user may not have the necessary authorizations to view the relationship.
  Data Inconsistency: There may be inconsistencies in the data that prevent the relationship from being displayed.
  Technical Issues: There could be underlying technical issues, such as database problems or system bugs.
  
  Solutions:
  
  Check Data Maintenance: Verify that the relationship data is correctly maintained in the relevant master data records. Ensure that both the source and target objects of the relationship exist and are active.
  Review Configuration: Check the configuration settings for the relationship type in the relevant customizing transaction (e.g., SPRO). Ensure that the relationship type is defined correctly.
  Authorization Check: Ensure that the user has the necessary authorizations to view the relationship. This can be checked in the user roles and profiles.
  Data Consistency Check: Run consistency checks on the master data to identify and resolve any inconsistencies. This may involve using specific SAP reports or transactions designed for data validation.
  Technical Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific fixes or updates related to the UD642 error. You can search for relevant notes in the SAP Support Portal.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SE11 (Data Dictionary), SE16 (Data Browser), or specific master data transactions.
  Documentation: Review SAP documentation related to the specific module you are working with (e.g., SAP Master Data Governance, SAP CRM, etc.) for more context on relationships and their management.
  
  By following these steps, you should be able to identify the root cause of the UD642 error and implement a solution to resolve it.