To add Prefix to Purchase invoice in Web Application, Follow the below mentioned Steps:
Step 1: Click on Sales in the Taskbar and Select Document Settings.
Step 2: Select the Add Prefixes/Suffixes Option in the Document Settings.
Step 3: Click on Purchase, Select Prefixes and Click on Add Prefix.
Step 4: Add Prefix in the given option and Click on Submit.
Example: Here we have added “PRINV” as Prefix.