This is a CDX.

Yes I have tried set order to tag fldsidx, and get the same error.

The software is a multi-user software, so it is possible more than one person might be in the table, but we have locks and we don't have the users updating the table until a save is used. The changes are stored in arrays before save. When I am trying to fix the data, no one else is using the tables. I am on a stand a lone pc.

There is a function for re-indexing the user can use if they think there might be a corruption. It deletes all the tags, and looks up the index tags in a data dictionary and re-creates them. This usually fixes problem, but in a very few cases it can break a fixed table. I can't imagine why.

Thanks,
Jim