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Review the part program and locate the G73.1 (or figure copy) command that triggered the alarm.

Trace backwards in the program to verify a figure registration command (G73.2 or G72.1 depending on system) exists with matching figure number before the copy command.

Verify the figure definition block includes proper start point, geometry definition, and end registration command without any gaps or interruptions.

Ensure the figure number called in the copy command exactly matches the registered figure number (check for typos or incorrect figure IDs).

Check that the figure definition contains valid geometry with at least one complete motion command (G01, G02, G03, etc.) between registration start and end.

Verify the figure registration end command (G73.3 or equivalent) is present and properly formatted immediately after the figure geometry.

Review parameter settings related to figure copy functionality (typically parameters 19600-19699 series) to ensure the feature is enabled and properly configured.

Incorrect parameter changes can affect other control functions. Document original values before making changes.

Test with a simple known-good figure definition to verify the copy function works, isolating whether the issue is definition-specific or system-wide.

Verify the figure is being defined and copied within the same program execution without M02, M30, or RESET commands between registration and copy.

Check for subprogram calls (M98) between figure registration and copy that might cause the figure definition to be lost from active memory.

If using optional block skip, ensure the figure registration is not being skipped while the copy command executes (both must execute or both must skip).

Review the program structure to ensure figure registration and all copy commands are in the main program level, not split across different program nesting levels.