#REF! Error in INDEX & MATCH Formula!

Hi Friends,

In the attached file, From A10:A20, I have a list of different items. From B10:B20 each item group is been mentioned and from C10:P20 day wise inventory qty is been mentioned.

Above said details, I have to do week wise summary in B2:H5 and I have written a formula which is giving either wrong result (as shown in C3) or #REF! Error!

Need your help to solve this issue…

Thanks & Regards,
Rajeshkumar R