To Edit Prefix in Purchase 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: Select option of Purchase Invoice Prefix and select the prefix you want to edit.
Step 3: In the Label Option add new Prefix and Click on Update.
Example : We will change the prefix from PRE to PREP .
Step 4: In the Purchase invoice, the edited prefix will be added.