The possible causes are:

1. In the "Irregular pocket canned cycle with islands", when a parameter has been defined with a wrong value in the finishing operation "G68". Perhaps, a parameter that only takes positive values has been assigned a negative value (or zero).
2. In the "Irregular pocket canned cycle with islands", when in the drilling operation (G69) parameter "B", "C" or "H" has been defined with a zero value.
3. In the rectangular (G87) or circular (G88) pocket canned cycles, either parameter "C" or a pocket dimension has been defined with a zero value.
4. In the "Deep hole drilling canned cycle with variable peck (G69), parameter "C" has been defined with zero value.
5. In the digitizing canned cycle, a parameter has been assigned a wrong value.

Perhaps, a parameter that only takes positive values has been assigned a negative value (or zero).

Correct the definition of parameters:

Pocket with islands (finishing operation).

"Q" parameter Only takes a value of 0, 1 or 2.

"B" parameter Only takes values other than zero.

"J" parameter It must be smaller than the radius of the tool used for that operation.

GRID pattern digitizing.

"B" parameter Only takes positive values greater than zero.

"C" parameter Only takes positive values other than zero.

"D" parameter It only admits values of 0 or 1.

ARC pattern digitizing.

"J" and "C" parameter Only takes positive values greater than zero.

"K", "A" and "B" parameter It only admits positive values.