CK11N No Direct Machine Cost

Hello SAP Gurus,

When I run CK11N to estimate the standard cost, I get the result only without the direct machine cost, but labor cost is correct as bellow:

http://scn.sap.com/servlet/JiveServlet/downloadImage/506810/image001.png

As you can see:

(1) the costing lot size is 1000PC

(2) direct machine cost (HMAC) is 0.00

When I check the relavant factors, I cannot find any errors:

(1) Activity price:KP26

http://scn.sap.com/servlet/JiveServlet/downloadImage/506811/image003.png

(2) Routing:CA23

http://scn.sap.com/servlet/JiveServlet/downloadImage/506812/image005.png

(3) work center: CR03

http://scn.sap.com/servlet/JiveServlet/downloadImage/506816/image007.png

According to the basic data I maintained, the direct labor cost=(70*1000PC/3600s)*200=3888.88, That is correct.

So the direct machine cost should be: (40*1000pc/3600s)*100=1111.11, but it is actually 0.00 now.

It seems no problem for every factor, I really don't know what causes the error which actually no error message. Could you please give me some advice to resolve it? Or do I missed some key configuration?

Thank you very much!

Eric