How To Fix ON156 - Selections of redundantly selected object types were removed

SAP Error Message - Details

• Message type: E = Error

• Message class: ON - Tools in area Object Modeler / Object Editor

• Message number: 156

• Message text: Selections of redundantly selected object types were removed

What causes this issue?

You have chosen Edit->Select on/off->Redundant object types. On this
and the following screens all object types which appear repeatedly in
the tree and correspond to the selected set will be displayed as
normal, that is not selected.

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?

No action is required. This is just for your information.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ON156 - Selections of redundantly selected object types were removed ?

  The SAP error message ON156, which states "Selections of redundantly selected object types were removed," typically occurs in the context of reporting or data selection processes within SAP, particularly when dealing with object selections in reports or queries.
  
  Cause:
  This error message is triggered when there are redundant selections of object types in your query or report. For example, if you have selected the same object type multiple times or if there are conflicting selections that SAP cannot process simultaneously, the system will automatically remove the redundant selections to avoid confusion or errors in data retrieval.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Selections: Go through the selection criteria in your report or query. Look for any duplicate entries or conflicting selections. Ensure that each object type is selected only once.
  
  
  Simplify Selections: If you have complex selection criteria, try to simplify them. Remove any unnecessary filters or conditions that may