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

5A028 - Overview

• 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.

5A028 - Details

• 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