Cause:

This issue appears due to the user having set the Ledger type as Registered in Ledger Master or GST No. mention in party Ledger.

In order to Post Unregistered Party bill correctly, the user needs to follow the below steps:

• Go to Masters > Ledger Master > Modify Ledger. 

• A 'Ledger Alteration' Window will appear.

• Press 'Enter' key on the selected ledger.

• Suppose 'Ahuja Medicine Centre' is the unregister party whose bills are showing in GSTR1 B2B.

• In the next window, the user will click on 'Ledger Details'.

• A 'Modify Ledger' window will appear.

• Press 'Enter' key on the 'Modify' Tab.

• In 'GST No'., the user can view GST No is mentioned.
• Remove GST NO.

• In 'Ledger Type', the user will select 'Unregistered' from the drop down.

• Press 'Ctrl+W' key to save the details.

After following the above steps, the unregistered party bill will get displayed in B2C column of GSTR1 in Marg Software.