Sage 100

we are attempting to delete a SO. we have successfully done so to other SO but this one item gives us an error #47 Substring reference out of string and we are unable to do anything.

Once every 1-2 weeks I rebuild all sort files and am wondering if I should also be rebuilding the key files? Is there any risk/downside to rebuilding the key files? Also, when I am running the utility do I want Integrity Check and Optimize File checked…