...
The simplest configuration is upload only with no metadata and Asset match strategy: No matches. In this case, the Match metafield is Relative path - Fullpath UNC (must be the same as what is in Stamp field).
If you have an asset in MM with Fullpath UNC like this and it is unique
if you import file with name File1.png it will have the same Fullpath UNC.
So it will match and replace Asset in MM.Upload with metadata from sheets and Asset match strategy: Metafield.
a. Users usually Match metafield Fullpath UNC. MatchTokenColumn must in this case be the same as FileNameColumn:
Matching will work like in case 1. You can use simple Excel sheet:
FileName | Description | Title | Keywords |
50182 | 50181 | 10192 | |
\File1. |
...
png | xls description1 | xml title1 | xls keyword1 |
\File2.png | xls description2 | xml title2 | xls keyword2 |
b. You can also match other metafield: