In Marg ERP Software, if an alert 'You are not Authorised' appears while modifying a Purchase Bill, this issue can be easily resolved.

In order to resolve this issue, the user needs to follow the below steps:

• Go to Masters > Passwords & Powers > Operator's.

• The user will select the operator to make desired changes.
• Suppose select 'A' and press 'Enter' key.

• The user will click on 'Search In All' option.

• The user will search 'Data Entry' and click on ‘Accept’ button.

• In 'Purchase & Gst Inward' option, the user will select 'Y'.

• Press 'Esc' key.

• Click on 'Yes' button.

• A 'Powers Change' POP-UP will appear in which the user will press 'Esc' key.

• Click on 'Yes' button.

• Now, for Re- login the user will press 'Ctrl+U' key on the main screen. 

• Enter the User ID and Password.

• Press 'Esc' key.

After following the above steps, the user can view the "You are not authorised to use this option" alert while Modify Purchase Bill will be resolved in Marg ERP Software.