KUKA Robot codes
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KUKA Robot Controller

System · Basic

Alarm KRC1040

KUKA Robot KRC1040 - <object> DELETE ? 4304

This alarm indicates that the system attempted to delete a KRL program object (module, function, or variable) that cannot be deleted due to system constraints or protection settings. The operation failed with internal error code 4304, which typically relates to permission or object state issues during deletion.

KUKA RobotSystemBasic

KRC1040

KUKA Robot KRC1040 - <object> DELETE ? 4304

<object> DELETE ? 4304

This alarm indicates that the system attempted to delete a KRL program object (module, function, or variable) that cannot be deleted due to system constraints or protection settings. The operation failed with internal error code 4304, which typically relates to permission or object state issues during deletion.

Common Causes

  • Attempting to delete a system-protected or read-only object
  • Object is currently in use or referenced by active program execution
  • Insufficient user permissions or access rights for deletion
  • Object is part of a locked or compiled program package
  • Memory or file system corruption preventing safe object removal

Troubleshooting Steps

  1. 1Check object properties to verify it is not marked as system-protected or read-only in the IDE
  2. 2Ensure no active program or task is using or referencing the object before deletion
  3. 3Verify user account has administrator or appropriate delete permissions in the KRC system
  4. 4Confirm the object is not part of a locked project or compiled library that restricts modifications
  5. 5Try deleting the object through the KUKA IDE instead of command-line interface if applicable
  6. 6If persistent, perform a system backup and reload the KRC software or contact KUKA support with system logs

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