You can associate the new CheckNumData function with a user-deifned field to enable a calling program to check whether a field with the data type of CHAR, NUMCHAR, ZONED, or PACKED contains valid numeric characters. If the program finds invalid data, it can take additional action. CheckNumData performs a function similar to the data checking options in the data map properties. However, CheckNumData applies data checking to a single field rather than to the entire data map. You can use CheckNumData to validate numeric data fields before conversion processing by another function such as CopyData.

For more information, see the "PowerExchange Functions for User-Defined Fields" appendix in the

PowerExchange Navigator User Guide

.