Incremental number range in non leading ledger

Hello Experts,

I have a serious problem with regard to number ranges in non leading ledger.

I have defined number range from 8000 to 8999 for document type SA. When I do a posting in FB50L, document number for non leading ledger is created as 8001. I am OK with this. But system is showing current number in use as 8099 instead of 8001. I have changed manually the current number as 8100 and posted one more document. Now document number is 8002, but number in use showing as 8199. If I post now document number will show as 8003, but number in use will show as same 8199.

Please advise me how to resolve this issue.

Thanks in advance.

Regds

Joy