Any post office shall not allow investment through withdrawal form (SB-7) under SAS / MPKBY Agency System in different National Savings Schemes.(23.06.2021) Leave a Comment / Daily Updates / By Team Bizsol Any post office shall not allow investment through withdrawal form (SB-7) under SAS / MPKBY Agency System in different National Savings Schemes. [ SB Order No. 10/2021 dtd 15th June 2021]