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Access the tool life management screen (OFFSET or TOOL LIFE menu) and count the number of registered tool groups currently stored.

Check parameters 6800-6809 to verify the maximum number of tool groups and tools per group allowed by your system configuration.

Delete obsolete or unused tool groups using the tool life management delete function to free memory space.

Back up all tool life data before deleting. Deleting active tool groups will affect production programs.

If all groups are needed, consolidate similar tools into shared groups or review parameter 6801 to increase capacity if licensing allows.

Review the part program around the alarm point for G10 L3 commands or tool life registration macros that create new tool groups.

Execute a tool life data clear operation (typically under OFFSET settings or maintenance menu) to reset all registered tool groups.

This will erase all current tool life counts and group assignments. Record critical data before clearing.

Modify the program to use existing tool groups rather than creating new ones, or add logic to delete old groups before registering new ones.

Test the program in single block mode to verify tool registration completes without exceeding memory limits.

Check battery voltage on the control (should be >3.0V DC). Low battery can cause data corruption and memory management errors.

Perform a complete tool life data initialization through the maintenance menu or by setting parameter 6800 bit appropriately then power cycling.

This clears all tool life data. Back up parameters and offsets first. Document all tool group configurations before proceeding.

Restore tool life data from a known good backup file if available, or manually re-enter tool group configurations.

If alarm persists after initialization, contact Fanuc service to check for SRAM memory hardware issues or consider BOOT system reload.

BOOT system operations require trained personnel and will clear all user data.