I have three clients who need to have new data files started for 2020 because their existing data files are, in one case over 20 years old, and for that reason is very large, the other two have similar problems.
I'm beginning to work on setting up the new files for one client and exporting .IIF files but I'm getting some strange error messages. When importing the Customer list to the new file, I'm getting a message telling me that "Item Sales Tax is not defined in Quickbooks". So I tried importing the item list first instead. None of the items will import and I'm not sure why. I have one message stating "QNTY column is repeated or empty in the header" and another one that reads CUSTITEMDICT with a column for Index and numbered 0-14, then a column for LABEL INUSE and all of them have N under that.
I'm not sure what the problem might be, or how to fix it. Any suggestions?