Error
Error Code:
658
SAP S/4HANA Error 658: Table Mutation During FK Execution
Description
This error signifies that an attempt was made to modify a table (insert, update, or delete) while the database was actively enforcing a foreign key constraint or executing a database trigger on the same or a related table. It typically occurs when a data modification operation conflicts with ongoing integrity checks, preventing potential data inconsistencies within the system.
Error Message
ERR_SQL_CANNOT_MUTATE_TABLE_DURING_FK_EXECUTION
Known Causes
4 known causesConcurrent Data Modification
Another transaction or process is attempting to modify the same table or a related table simultaneously, leading to a conflict during foreign key validation or trigger execution.
Recursive Trigger Logic
A database trigger, designed to activate on data changes, inadvertently attempts to modify the very table that caused it to fire, or a closely related table, leading to a self-mutation conflict.
Foreign Key Constraint Conflicts
The data being modified violates an existing foreign key constraint, and the database's attempt to validate or cascade the change conflicts with an ongoing operation or the table's current state.
Complex Nested Operations
Highly complex stored procedures or SQL statements with nested data modification operations inadvertently cause a table to be mutated multiple times within a single transaction, triggering this error.
Solutions
3 solutions available1. Identify and Isolate Concurrent Table Modifications advanced
Determine which processes are modifying the table and its related foreign key tables during the operation that triggers the error.
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Analyze the transaction or program that is failing with error 658. Identify the specific table and the foreign key constraint that is being violated.
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Utilize SAP's system tracing and debugging tools (e.g., ST05 for SQL Trace, SM21 for System Log, ST11 for Work Process Trace) to pinpoint the exact sequence of operations leading to the error. Look for any other database operations (INSERT, UPDATE, DELETE) occurring on the involved tables concurrently.
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If the concurrent modification is from another SAP application or batch job, temporarily disable or schedule it to run outside of the critical window. If it's an external integration, review its logic.
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In extreme cases, consider implementing a locking mechanism or a queuing system for critical data modifications to prevent simultaneous access to related tables.
text2. Review and Optimize Application Logic for Transaction Integrity advanced
Refactor the application code to ensure transactional consistency and avoid modifying parent/child tables in separate, non-transactional operations.
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Examine the ABAP code or other application logic responsible for the data manipulation that triggers the error. Pay close attention to how parent and child records are being updated or deleted.
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Ensure that all related database operations for a single business process are enclosed within a single, atomic database transaction. This typically involves using COMMIT WORK and ROLLBACK WORK appropriately.
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Avoid performing DML operations on tables involved in a foreign key relationship in separate transactions or without proper synchronization. For example, if you are deleting a record from a parent table, ensure that all related child records are handled within the same transaction context.
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If using SAP standard functions or BAPIs, review their documentation for any known issues or best practices regarding transactional integrity with foreign key constraints.
text3. Temporarily Disable and Re-enable Foreign Key Constraint medium
A temporary measure to allow critical operations to complete, but requires careful consideration of data integrity.
1
Identify the specific foreign key constraint causing the issue. This can be found in the database schema or through SAP's table maintenance transactions (e.g., SE11).
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Execute SQL commands to disable the foreign key constraint. **Caution: This should only be done for a very short period and with a clear understanding of the risks involved.**
ALTER TABLE <parent_table_name> DISABLE CONSTRAINT <fk_constraint_name>;3
Perform the operation that was failing due to the foreign key constraint.
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Immediately re-enable the foreign key constraint. **It is crucial to ensure data integrity before re-enabling.** You might need to run data validation checks.
ALTER TABLE <parent_table_name> ENABLE CONSTRAINT <fk_constraint_name>;5
If data inconsistencies are found after disabling, they must be resolved before re-enabling the constraint.
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