SNP is associated with the DSR scores. If the DSRs go below 4.5 in 3 out of 4 components, then the seller may face SNP. The ACCT Manager is not responsible for such situation. If the buyer leaves a low DSR, then the seller may have to face SNP. I recommend you to work upon your DSR criteria.
I am not very experienced seller so you may seek advice of other experienced sellers also.
Wish you good luck.