Only 0 PC of material XXXXX available VL150

Dear Expert ,

I need your suggestion about our problem.

I have searching before and still didnt get the answer.

I am posting a delivery using transaction VL01N. I have a red error message Only 0 PC of material XXXXX available. Message no. VL150 .

My Sales Order for that item was confirmed. I have checked at CO09 , the item was confirmed too , but ATP = 0.

Then I checked at MMBE and MD04, there is 1 item Unrestricted, and nothing deserved.

The Plant and Storage Location is right and same lika the sales order and this material are not in the Blocked Stock too ,

Please give me a suggest to fix this problem ...

Regards

Debby Agnes M