adding data to data source without uploading all of the data source

[mcohen13]

currently i have a data source with TSV format.
I wish to add two fields to the data source that will be shown in the file input it self
how can i do that without uploading the entire file again to splunk and avoid import more than the license allow.

[xpac]

This is a duplicate of this question, right?

[mcohen13]

yes it is a duplicate