Let us kindly remind you that the Partner’s Referral Link may become inactive if you changed the keyword.
What is the keyword itself for?
To make the referral link more recognizable, you can replace your Partner's id in it with a unique word. However, it's necessary to remember that changing a keyword will invalidate all links created with the previous keywords before.
Meanwhile, all Referral Links with the Partner ID will not be affected by the changes. They will be active regardless of the keyword change.