Justin_smith,
You need to understad the building blocks of a workflow and how it works. First, lets look to solve your problem
1. An error like "No results were found. The following filters have returned empty results" means that the SQL query in your filter chosen in "Automatically serached" object has found no rows matching the criteria you gave.
To verify this do a "Test" of the filter.There is a test button at the bottom left corner. Provide same values as you were doing when executing the command. Likely you will get empty result. So no volume of the given name belonging to the given vserver on the given cluster is present in WFA DB.
sinhaa
If this post resolved your issue, help others by selecting ACCEPT AS SOLUTION or adding a KUDO.