How To Fix 7A021 - Enter a unique reference object

SAP Error Message - Details

• Message type: E = Error

• Message class: 7A - PS Progress Analysis

• Message number: 021

• Message text: Enter a unique reference object

What causes this issue?

You have not selected a unique reference object.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

Enter one of the following:
WBS element
Network and activity
Network, activity, and activity element
Order

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 7A021 - Enter a unique reference object ?

  The SAP error message 7A021 ("Enter a unique reference object") typically occurs in the context of SAP when a user is trying to create or modify a document or entry that requires a unique reference object, such as a purchase order, sales order, or other transactional data. This error indicates that the system has detected a duplicate reference object, which is not allowed.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that the reference object (like a document number or ID) you are trying to enter already exists in the system.
  Incorrect Data Entry: The user may have mistakenly entered the same reference object multiple times or may have copied and pasted data that includes duplicates.
  Configuration Issues: In some cases, the system configuration may not be set up to allow for certain types of reference objects to be reused.
  
  Solution:
  
  Check Existing Entries: Verify if the reference object you are trying to enter already exists in the system. You can do this by searching for the object in the relevant transaction or using transaction codes like SE16 or SE11 to look up the database table.
  Use a Unique Reference: If the reference object already exists, you will need to create a new, unique reference object. This may involve changing the number or identifier you are using.
  Review Input Data: Ensure that the data you are entering is correct and does not contain duplicates. Double-check for any typos or errors in the reference object field.
  Consult Documentation: If you are unsure about the requirements for the reference object, consult the relevant SAP documentation or help files for guidance on what constitutes a unique reference.
  System Configuration: If you believe the error is due to a configuration issue, consult with your SAP Basis or configuration team to review the settings related to the reference objects.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may be using various transaction codes (e.g., ME21N for purchase orders, VA01 for sales orders).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for relevant notes.
  User Permissions: Ensure that you have the necessary permissions to create or modify the reference object in question.
  Training and Documentation: If you are new to SAP or the specific module you are working in, consider seeking additional training or reviewing user manuals to better understand how to manage reference objects.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team for further assistance.