QRG5093

The Factor 1 entry (positions 18-27 of a calculation specification), or a Factor 2 entry (positions 33-42) or a Result-Field entry (positions 43-48) array element has an invalid index if it has a constant index of zero, or it has a constant index greater than the number of elements in the array, or the index is a table/array.

Specify a valid array index. Recompile.