How To Fix MPE_RTG_UI198 - You cannot add a reference object to another reference object

MPE_RTG_UI198 - Overview

• Message type: E = Error

• Message class: MPE_RTG_UI - Messages for Routing Maintenance

• Message number: 198

• Message text: You cannot add a reference object to another reference object

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPE_RTG_UI198 - You cannot add a reference object to another reference object ?

  The SAP error message MPE_RTG_UI198, which states "You cannot add a reference object to another reference object," typically occurs in the context of managing reference objects in SAP, particularly in the area of project management or resource management.
  
  Cause:
  This error usually arises when you attempt to create a hierarchical relationship between two reference objects. In SAP, reference objects are often used to define relationships between different entities, such as projects, tasks, or resources. However, the system does not allow one reference object to be added as a subordinate to another reference object. This restriction is in place to maintain the integrity of the data model and prevent circular references or other logical inconsistencies.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Object Types: Ensure that you are not trying to add a reference object to another reference object. Instead, you should be adding a standard object (like a task or a project)