How To Fix CZ406 - Errors in foreign key dependencies!

SAP Error Message - Details

• Message type: E = Error

• Message class: CZ - Customizing messages

• Message number: 406

• Message text: Errors in foreign key dependencies!

What causes this issue?

Either (1) there are no entries in the tables associated with the
organizational object, or (2) the check table concerned does not
contain key record for the tables. The first kind of error is indicated
by a red cross in the log for the "Check" action; the second kind is
indicated in the log by a yellow lightning symbol.

System Response

The system creates an error log.

How to fix this error?

Display the log (choose Extras -> Technical logs -> Check results) to
gain an overview of the missing table entries. If necessary, you can
enter missing entries manually using the table maintenance transaction.
Do not do this for the original system OrgUnits, but on copies of them.
There is not further effect on functionality.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CZ406 - Errors in foreign key dependencies! ?

  The SAP error message CZ406, which indicates "Errors in foreign key dependencies," typically arises when there are inconsistencies or violations in the foreign key relationships defined in the database. This can occur in various contexts, such as during data entry, data migration, or when executing certain transactions.
  Causes of CZ406 Error
  
  
  Missing or Incorrect Foreign Key Values: The primary cause is often that the value being entered does not exist in the referenced table. For example, if you are trying to enter a record that references a customer ID that does not exist in the customer master table.
  
  
  Data Integrity Issues: If there are inconsistencies in the data, such as orphaned records (records that reference a non-existent parent record), this can trigger the error.
  
  
  Configuration Issues: Incorrect configuration of foreign key relationships in the data model can lead to this error.
  
  
  Data Migration Issues: During data migration, if the data is not properly validated or if the sequence of data loading is incorrect, it can lead to foreign key violations.
  
  
  Solutions to CZ406 Error
  
  
  Check Foreign Key Relationships: Review the foreign key relationships defined in the database. Ensure that all referenced records exist in the parent tables.
  
  
  Validate Data: Before entering or migrating data, validate that all foreign key values correspond to existing records in the referenced tables.
  
  
  Correct Data Entry: If the error occurs during data entry, ensure that the user is entering valid values that exist in the corresponding tables.
  
  
  Data Cleanup: If there are orphaned records, consider cleaning up the data by either deleting or updating the records to ensure referential integrity.
  
  
  Review Configuration: If the error is due to configuration issues, review the foreign key settings in the relevant data model or configuration settings.
  
  
  Use Transaction Codes: Utilize transaction codes like SE11 (Data Dictionary) to check the table definitions and foreign key relationships.
  
  
  Consult Documentation: Refer to SAP documentation or support for specific guidelines related to the version of SAP you are using.
  
  
  Related Information
  
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), and SE16 (Data Browser) to analyze and troubleshoot the issue.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the CZ406 error.
  
  
  Debugging: If you have access to development tools, consider debugging the program or transaction that is causing the error to identify the root cause.
  
  
  User Permissions: Ensure that the user has the necessary permissions to access and modify the relevant tables.
  
  
  By following these steps, you should be able to identify and resolve the issues causing the CZ406 error in your SAP system.