In Marg Books, an alert for 'Select Valid HSN' appears when the user has set the HSN code length in the Control Room. If an HSN code with a length that exceeds or falls short of this limit is entered, this alert will appear. This issue can be easily resolved.

In order to resolve 'Select Valid HSN' alert, the user needs to follow the below mentioned steps:

• Firstly, click on 'Settings' icon.

• In 'Control Room' option, the user will select 'Configure' button.

• The user will search 'HSN'.

• In 'HSN Code Length' field, the user will enter the number of digits required for the HSN Code.
• Suppose enter '6'.

• Now, press 'ESC' key.

• Click on 'Save' button to save the changes.

• Click on 'Ok' button.

After following the above steps, the user can view an alert of 'Select valid HSN' will get Resolved in Marg Books.