Error
Error Code:
155
SAP S/4HANA Error 155: Transaction Rollback Deferred FK
Description
Error 155, ERR_TX_ROLLBACK_DEFERRED_FK, indicates that a database transaction was rolled back because it violated a deferred foreign key constraint. This typically occurs when an application attempts to commit changes that would leave the database in an inconsistent state, and the foreign key check, which was postponed, ultimately fails at the transaction's end.
Error Message
ERR_TX_ROLLBACK_DEFERRED_FK
Known Causes
4 known causesReferential Integrity Violation
An operation within the transaction, such as an insert, update, or delete, directly violates an existing foreign key constraint, and the deferred check identifies this inconsistency.
Application Logic Flaw
The application's business logic performs a series of data modifications that, when considered together at the end of the transaction, result in a state that violates a deferred foreign key constraint.
Concurrent Data Modification
Another concurrent transaction modifies related data, causing the current transaction's deferred foreign key check to fail when it attempts to commit its changes.
Incorrect Data Sequencing
Operations within the transaction are not sequenced correctly, leading to a temporary, but ultimately invalid, state that violates a deferred foreign key constraint upon commit.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service