Well, because you didn't write many things. I can't guess your intention. You have to say everything.
1. The case of duplicates in column H in NDS_SHEET In NSD_SHEET H24 = H25 = DemoData_0000015_Import.zip You didn't write how to search, so I did this: When the code finds H24 = "DemoData_0000015_Import.zip" in B229 in REF_SHEET, it no longer searches for H25 in REF_SHEET (that's why I use dictionary DIC) So how do you want it now? Should there be 2 results (for H24 and H25)? <#266912.1><line 24> <#266912.1><line 25> ??? Or maybe something else? If you don't say anything, I won't know anything.



2. The issue of duplicates in column B in REF_SHEET. For example, let's say that "DemoData_0000015_Import.zip" occurs 3 times in column B of REF_SHEET - in B299, B367 and B489. How many results should there be? At the moment, the code will find "DemoData_0000015_Import.zip" in B299 and stop searching, it will not search any further to find in B367 and B489 (Exit For in If pos Then … End If). So what do you want now? The code should search further to B367 and B489?



3. Are we looking for "File Name" from column H of sheet NDS_SHEET in column B of sheet REF_SHEET, or vice versa: will we find for each "File Path" from column B of sheet REF_SHEET its "companion" in column H of sheet NDS_SHEET?


4. Or maybe something else that I don't know about? If you don't say anything, I won't know anything.