To Edit Prefix in Sales Invoice in Mobile Application, follow the below mentioned steps:
Step 1: Open the Mobile Application and Click on Document Settings in Quick Access.
Step 2: Click on the Invoice Prefix option and select the prefix you want to edit.
Example : We will change the prefix from INVY to INVV.
Step 3: In the Label Option Edit the Prefix and Click on Update.
Step 4: In the invoice, the edited prefix will be added.