How To Fix 88830 - Double declaration key &1

88830 - Overview

• Message type: E = Error

• Message class: 88 - REA Processing

• Message number: 830

• Message text: Double declaration key &1

What causes this issue?

A duplicate declaration key has occurred in a declaration. This is a
grave error that can occur when the number range has been incorrectly
set up.

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?

Error message extract from SAP system. Copyright SAP SE.

88830 - Details

• The SAP error message "88830 Double declaration key &1" typically occurs when there is an attempt to create or modify a master data record (such as a material, vendor, or customer) that has a key that is already in use. This error indicates that the key you are trying to use is already declared in the system, leading to a conflict.
  
  Cause:
  
  Duplicate Key: The most common cause is that the key (e.g., material number, vendor number) you are trying to use already exists in the database.
  Incorrect Data Entry: There may have been a mistake in data entry, leading to an attempt to create a record with a key that is already in use.
  Data Migration Issues: If data was migrated from another system, there may be duplicates that were not properly handled.
  
  
  Solution:
  
  Check Existing Records: Verify if the key you are trying to use already exists in the system. You can do this