re: Number ranges for trans./event type WA in year 2012 does not exists.

Hi gurus

while i am posting the stock in to the plant i am getting error like

Number ranges for trans./event type WA in year 2012 does not exists.

i had given the Tcode MB1C and provided the required information but not able to post the stock into plant. please help me.

here i am providing the snapshots also.please have a look and do need full.