Error
Error Code:
299
SAP S/4HANA Error 299: Cannot Drop System Index
Description
This error indicates an unsuccessful attempt to drop a database index that is actively used to enforce a unique or primary key constraint. It occurs when a user or process tries to remove a critical system index that ensures data integrity within SAP S/4HANA.
Error Message
ERR_SQL_NOT_DROP_SYSIDX: Cannot drop index used for enforcement of unique/primary key
Known Causes
3 known causesDirect SQL Drop Attempt
An explicit SQL command was executed to drop an index without first removing the associated unique or primary key constraint that it enforces.
Schema Dependency Oversight
The user or application was unaware of the critical dependency between the index and an existing unique or primary key constraint in the database schema.
Automated Process Conflict
An automated script, migration tool, or maintenance routine attempted to drop a system-critical index, leading to a conflict with data integrity rules.
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