Thanks for your help! I would say errors in the formula, specifically users picking incorrect dimension members. I do not have a ton of experience with the Excel add-in yet. One of my primary Excel add-in users said if there were errors in a XFSET formula previously nothing would load at all in the sheet and she is saying now it is loading the data in the sheet without errors and then giving her this attached error message. We haven't made any changes, so I am trying to figure out the root cause, it could be user error. I am trying to better understand the behavior for XFSET formula loads. Will partial data upload as long as the formulas are correct and those with errors just bomb out, or is it all or nothing? Thanks!