FRM-40930: Array index was non-numeric.
Cause: An attempt was made to access a variant that holds an array, but the supplied array indices were non-numeric and not either ROW or COLUMN.
Action: The only valid array indices are numbers, which should be separated by columns. If you're fetching into a table from a variant, ROW and COLUMN can be used as placeholders for the row and column iterators during table construction.
Trigger: ON-ERROR