Billing Block will not worked if you did not assign it

Define the possible block indicators in SM30 - V_TVFS 

and 

allocate them to the billing types concerned in SM30 - V_TVFSP.
 

Your Billing Block will not worked if you did not assigned it to the desired billing types.
 

You can auto block by :- 

1.  sales document type in transaction VOV8, fields Billing Block,

or

2.  item categories in SM30 - V_TVAP, by filling the fields Billing Block.

Related Topics:
Create/Modify Billing Document Type
Steps for creating new or changing existing Billing Doc Type

SAP SD Books
SAP Sales and Distribution, Certification, Interview Questions Reference Books

SAP Sales and Distribution Tips
SAP SD - Sales/Distribution Tips

Best regards,
SAP Basis, ABAP Programming and Other IMG Stuff
http://www.erpgreat.com

All the site contents are Copyright © www.erpgreat.com and the content authors. All rights reserved.
All product names are trademarks of their respective companies.  The site www.erpgreat.com is in no way affiliated with SAP AG. 
Every effort is made to ensure the content integrity.  Information used on this site is at your own risk. 
 The content on this site may not be reproduced or redistributed without the express written permission of 
www.erpgreat.com or the content authors.