How To Fix /CFG/MIGRATION666 - [Post Processing]Identify Foreign key sequence issue end

SAP Error Message - Details

• Message type: E = Error

• Message class: /CFG/MIGRATION -

• Message number: 666

• Message text: [Post Processing]Identify Foreign key sequence issue end

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /CFG/MIGRATION666 - [Post Processing]Identify Foreign key sequence issue end ?

  The SAP error message /CFG/MIGRATION666 [Post Processing] Identify Foreign key sequence issue end typically relates to issues encountered during the migration or configuration of data in SAP systems, particularly when dealing with foreign key relationships in the database.
  Cause:
  
  Foreign Key Constraints: The error often arises when there are inconsistencies or violations of foreign key constraints in the database. This can happen if the data being migrated or processed does not adhere to the defined relationships between tables.
  Data Integrity Issues: If the data being migrated has missing references or incorrect sequences, it can lead to this error. For example, if a child record references a parent record that does not exist, it will trigger this error.
  Configuration Issues: Sometimes, the configuration settings in the SAP system may not align with the data being processed, leading to foreign key sequence issues.
  
  Solution:
  
  Check Data Integrity: Review the data being migrated or processed to ensure that all foreign key relationships are valid. This includes checking that all referenced records exist and that there are no orphaned records.
  Adjust Migration Logic: If you are using a migration tool or custom scripts, ensure that the logic correctly handles the order of operations. For example, parent records should be created before child records that reference them.
  Use Transaction Codes: Utilize transaction codes like SE11 (Data Dictionary) to check the foreign key relationships and ensure they are correctly defined.
  Run Consistency Checks: Use SAP tools to run consistency checks on the database to identify and resolve any integrity issues.
  Review Logs: Check the application logs for more detailed error messages that can provide insights into the specific records causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to migration and foreign key issues. SAP frequently releases notes that provide solutions or workarounds for known issues.
  Documentation: Review the SAP documentation for the specific migration process you are using, as it may contain guidelines on handling foreign key constraints.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with SAP support or a technical consultant who specializes in data migration and database integrity issues.