>I seem to recall that if SET COLLATE is anything other than MACHINE, maximum key length is 120 instead of 240.

Exactly!!!

I had a SET COLLATE TO "GENERAL" because of portuguese acented names in another table, without a "closing" SET COLLATE TO "MACHINE", but, anyway, I wasn't aware of this key length issue.

After reading your helpful reply I went back again to error 112, INDEX ON and SET COLLATE explanations and found no reference to what you told me. Please, where can I find a reference to this in VFP docs?

Thank you very much, All.

Best regards,

Fernando