Error while preparing Invoice

Dear Sir's

Please help me to resolve below issue.

while preparing invoice error comes like 0 No of Qty for material.

we have already stock for particular material with partiular batch in BOST, but while preparing invoice error comes only 0 No. Qty of Material available.

whenever such error comes we are check for particular material pending order & go to the particular sales order for the particular material & goto the schedule line for particular item & change that material Schedule line category CP to CN. for all pending Order & then Make invoice.

earch and every time we face this problem.

how to resolve this issue

please guide to resolve this issue.

Thanks.

Anirudha