Circular Reference Error Not Appearing Initially, then appears later
I've created a few summary sheets which use VLOOKUPs from my master data sheet, as well as other sheets.
I've noticed that when I try to do a VLOOKUP, the formula will initially work, and pull the data as expected. However after some time, I'll reopen the same summary sheet, and see that the VLOOKUP Formula has an error message of #CIRCULAR REFERENCE.
I am pulling information into my summary sheet, and then also pulling information out of it back into the MASTER using VLOOKUPs, but neither of those VLOOKUPs are a circular reference, except for the fact that they reference the same range of cells. (but not the same columns)
More details below:
Master Data Sheet: (it's very large)
The "CHECK" Columns pull from the Summary Sheet that I created (second/third screenshot) and use a formula such as with a type of symbol:
=IF(ISERROR(VLOOKUP([COLUMN1]@row, {Summary Sheet Range 2}, 4, false)), "n/a", VLOOKUP([COLUMN1]@row, { Summary Sheet Range 2}, 4, false))
The "Summary Sheet Range 2" is all the columns in the below "Summary Sheet" screenshots.
Summary Sheet:
The Blue column contains the same value as the first column COLUMN1) above and references the above master sheet with a VLOOKUP to get the "OVERALL STATUS" and "PLANNED DATE..." values.
OVERALL STATUS and PLANNED DATE.. use formulas such as:
=VLOOKUP([KEYA]@row, {Master Sheet Range 1}, 17, false)
The "Master Sheet Range 1" is all the columns in the above screenshot)
The strange part is when I first put in the formula it works correctly (see below:)
But then a day (or so later) when I reopen the sheet, it will give me the error:
Any advice would be greatly appreciated.
Best Answer

I fixed my problem. There really was a record that was being referenced to the same spreadsheet. After correcting this single record the problem was solved.
Answers

Hi @Sunil Kadikar,
Per the Formula Error Messages Help article, the #CIRCULAR REFERENCE is caused when something in a formula references itself.
It does seem strange that the data populates as expected first but then reverts to the error message. If you haven't done so already, I highly recommend reaching out to the Support Team, as they will be the best resource for troubleshooting.
I hope this helps!
Thanks,
Ben

This problem is also happening to me.

I fixed my problem. There really was a record that was being referenced to the same spreadsheet. After correcting this single record the problem was solved.
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