To add Prefix to 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 Click on Add New.
Step 3: In the Label Option add new Prefix and Click on Save.
Example : We are taking PRE as New Prefix.
Step 4: In the Purchase , Select the Edit option.
Step 5: Select the Prefix and Click on Add New Prefix.