How To Fix 5A028 - Relationship structure & & & not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 028

• Message text: Relationship structure & & & not allowed

What causes this issue?

This error occurs when the relationship you are trying to create is
somehow in conflict with, or contradicts, another relationship that
already exists.
For example, this message would appear if you try to create a
relationship between two organizational units, and one of the units
already has this relationship with another organizational unit, located
on a different level of the structure. This message also appears if you
try to relate an object to itself.

System Response

The system will not allow you to create the relationship.

How to fix this error?

Make sure you have selected the correct objects for the relationship.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5A028 - Relationship structure & & & not allowed ?

  The SAP error message 5A028 indicates that there is an issue with the relationship structure in the system. This error typically arises when you are trying to create or modify a relationship in the SAP system that is not allowed due to the defined relationship structure.
  Cause:
  The error message 5A028 usually occurs due to one of the following reasons:
  
  Invalid Relationship Type: The relationship type you are trying to use is not valid for the specific object or context.
  Configuration Issues: The relationship structure may not be properly configured in the system, leading to restrictions on certain relationships.
  Hierarchy Constraints: There may be constraints in the hierarchy that prevent the establishment of the relationship you are attempting to create.
  Missing Authorizations: The user may not have the necessary authorizations to create or modify the relationship.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Relationship Type:
  
  Verify that the relationship type you are trying to use is valid for the objects involved. Consult the documentation or configuration settings to ensure that the relationship is allowed.
  
  
  
  Review Configuration:
  
  Go to the configuration settings for the relationship structure in the SAP system. Ensure that the relationship types are correctly defined and that there are no restrictions that would prevent the relationship from being created.
  
  
  
  Hierarchy Validation:
  
  If the relationship is part of a hierarchy, check the hierarchy structure to ensure that it allows for the relationship you are trying to establish.
  
  
  
  User Authorizations:
  
  Ensure that the user attempting to create or modify the relationship has the necessary authorizations. You may need to consult with your SAP security team to verify and adjust user roles if needed.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes or updates that may address this specific error message. There may be patches or updates that resolve known issues related to relationship structures.
  
  
  
  Testing in a Development Environment:
  
  If possible, replicate the issue in a development or test environment to better understand the cause and test potential solutions without affecting the production system.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like BP (Business Partner), PFCG (Role Maintenance), or others related to the specific module you are working with.
  Documentation: Refer to the SAP Help Portal for detailed documentation on relationship management and configuration.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support for further assistance.