• Go to Transactions > Purchase > Bill (Alt+P).

• A 'Purchase Entry' window will appear.
• In 'Date', the user will mention the date as per the requirement.
• Suppose mention '30-06-2023'.

• A 'Ledgers' window will appear.
• The user will select the ledger as per the requirement.
• Suppose select 'Ranbaxy India Ltd.'.

• Now when the cursor will stop on the Sale Type the user will press 'F7' key or 'SpaceBar' key. 

Note: If cursor not wait on Purchase Type.

• A 'Purchase Type' window will appear in which the user will select 'Type' as per the the requirement.
• Suppose select 'Central'.

Note: If All Purchase Type not show.

After following the above steps, the user can change Purchase Type while creating Purchase Bill in Marg Software.