How To Fix REBDOA026 - Number &1 for object group assigned more than once ('&2' and '&3')

SAP Error Message - Details

• Message type: E = Error

• Message class: REBDOA - Messages for Object Relationships

• Message number: 026

• Message text: Number &1 for object group assigned more than once ('&2' and '&3')

What causes this issue?

The same number (<ZH>&V1&</>) is assigned to more than one object group
- object group <ZH>&V2&</> and object group <ZH>&V3&</>.

System Response

You are <ZH>not</> allowed to assign object groups with the same number.

How to fix this error?

Change the numbers so that each object group has its own unique number.
For example, you can use automatic number assignment to achieve this.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message REBDOA026 - Number &1 for object group assigned more than once ('&2' and '&3') ?

  The SAP error message REBDOA026 indicates that there is an issue with the assignment of an object group in the system. Specifically, it means that the same object group has been assigned more than once to a particular number (or identifier) in the context of a specific process or configuration.
  Cause:
  The error typically arises in scenarios where:
  
  An object group (like a cost center, internal order, or any other grouping) is mistakenly assigned multiple times to the same entity or configuration.
  There may be a configuration error in the system where the same object group is being referenced in different contexts, leading to ambiguity.
  Data inconsistencies or duplicate entries in the configuration tables.
  
  Solution:
  To resolve the REBDOA026 error, you can follow these steps:
  
  
  Identify the Object Groups: Check the object groups mentioned in the error message (&2 and &3). These will help you understand which groups are causing the conflict.
  
  
  Review Assignments: Go to the relevant configuration or master data transaction where these object groups are assigned. Look for duplicate entries or assignments.
  
  
  Remove Duplicates: If you find that the same object group is assigned more than once, remove the duplicate assignment. Ensure that each object group is assigned uniquely to the entity.
  
  
  Check Configuration Settings: If the error persists, review the configuration settings related to the object groups. Ensure that there are no conflicting settings that might lead to this error.
  
  
  Data Consistency Check: Run any relevant data consistency checks or reports in SAP to identify and rectify any inconsistencies in the data.
  
  
  Consult Documentation: If you are unsure about the specific object groups or their intended assignments, refer to the SAP documentation or consult with a functional consultant who specializes in the relevant module.
  
  
  Testing: After making the necessary changes, test the process again to ensure that the error has been resolved.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to view or edit object group assignments (e.g., OKB9 for cost centers, KOB1 for internal orders).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP support team for further assistance.
  
  By following these steps, you should be able to identify and resolve the REBDOA026 error in your SAP system.