At first, it was only one item, which seemed to affect all shop orders for that item. But, it has grown to the point that I can no longer perform negative acvivity transactions on any shop floor order now. I don't understand what the problem is. Has anybody experienced this problem before? I thought at first that it had something to do with the IMINVTRX.BTR file. But now I am leaning toward the IMLSTRX.BTR file. Due to the size of the IMINVTRX file, I was not able to investigate as thoroughly as I like in access. Now, I am at a loss. please help???