How To Fix D0803 - &: Key values occur more than once in table &

SAP Error Message - Details

• Message type: E = Error

• Message class: D0 - Machine-level ABAP/4 Dictionary texts (e.g. debugging)

• Message number: 803

• Message text: &: Key values occur more than once in table &

What causes this issue?

This is an internal error.

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?

Please contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message D0803 - &: Key values occur more than once in table & ?

  The SAP error message D0803, which states "Key values occur more than once in table &," typically indicates that there is a violation of the uniqueness constraint for a key field in a database table. This error occurs when an attempt is made to insert or update a record in a table where the key value already exists, leading to duplicate entries.
  Cause:
  
  Duplicate Key Values: The most common cause is that the key value you are trying to insert or update already exists in the table.
  Data Integrity Issues: There may be issues with data integrity, such as incorrect data being imported or migrated into the system.
  Concurrency Issues: If multiple users or processes are trying to insert or update records simultaneously, it may lead to conflicts.
  Incorrect Logic in Custom Code: If there is custom ABAP code or enhancements that manipulate data, it may inadvertently create duplicates.
  
  Solution:
  
  
  Check Existing Records: Before inserting or updating a record, check the existing records in the table to ensure that the key value does not already exist.
  
  You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to view the table and its contents.
  
  
  
  Modify the Key Value: If the key value is indeed a duplicate, consider modifying it to a unique value before the insert or update operation.
  
  
  Review Custom Code: If the error is occurring due to custom ABAP code, review the logic to ensure that it correctly handles existing records and does not attempt to create duplicates.
  
  
  Data Cleanup: If there are existing duplicates in the table that should not be there, you may need to clean up the data. This could involve deleting or merging records as appropriate.
  
  
  Locking Mechanisms: If concurrency is an issue, consider implementing locking mechanisms to prevent multiple processes from trying to insert the same key value simultaneously.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific table and error message for any additional guidance or known issues.
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE16 (Data Browser), SE37 (Function Module), SE80 (Object Navigator).
  SAP Notes: Check SAP Notes for any specific notes related to the error message D0803 or the table in question.
  Debugging: If the error occurs during a specific transaction or process, consider using the debugger to trace the execution and identify where the duplicate key value is being generated.
  
  By following these steps, you should be able to identify the cause of the D0803 error and implement a solution to resolve it.