I'd suggest there's been a change to the program, or the data dictionary in the program, so that it's looking specifically for a numeric return for the Address subtype.
So some quick options;
- Modify the standard program, so that it'll accept a string instead of an integer. Should be specified in the code somewhere (search on the field for the subtype for Address)
- Redo the data in the system. This would require you to copy/create the existing T1 addresses to a new, valid numeric subtype, and then delimit the existing T1 addresses. Note this would require some regression testing, to ensure other areas aren't impacted by changing the subtype (ESS, bank transfers, etc).
I'd look at the second option over the first if I had this issue.