I have used these formulas individually and they work, but need to combine as an OR statement
=IF(LEN(MSID@row) = 2, "00" + MSID@row, MSID@row)
=IF(LEN(MSID@row) = 3, "0" + MSID@row, MSID@row)
=IF(OR(IF(LEN(MSID@row) = 2, "00" + MSID@row, MSID@row), LEN(MSID@row) = 3, "0" + MSID@row, MSID@row))
But the combined formula gives an Incorrect Argument Set, any ideas.