Edit/Duplicate RCS template
To Edit a template - You need to duplicate it and do the changes and save it.
Step 1: Go to the RCS section in MSG91 and select the RCS Bot ID from the drop down, in which you need to the edit the template.

Step 2: Click on the 3 dots of the template that we have to edit. And select Duplicate.

Step 3: The template will open, do the changes as per the requirement and the limitation doc: https://msg91.com/help/rcs/rcs-create-template-with-validations
Change the name of the template
Click on Save. Wait for the approval (4-6 hours)

Once approved you can start sending the RCS messages.