do you use a collate sequence other than MACHINE? > >Thanks for your interest in helping. > >The fields are Field1 C(12) and Field2 C(16) >and the index is Field1 + Field2. > >The seek uses Memvar1 + memva2. Both memvars are previously converted with a padr() function to be the correct length for each. > >The table accepts the insertion of the duplicated value without an errror message. > >When I use and SQL the duplictes show up. Same as with a broewse with 'nooptimze'. If I don't use 'nooptimize' in the browse the duplicates don't show.