Honored Contributor Honored Contributor
Re: Change value of drop down list in SRC

Not experience in SRC but in such cases go to form and check what is there in Display or Value list property of that particular field. here you can alter value as desired.
If you not find any value still default value is populating the check for the respective and master FC, here check the calculation tab for 'initial' column as true or evaluated to true.

Assign Kudo, if found post useful and mark it accepted if solves the issue.