Problem ar READ DATA Step

Question

Hi all  ,
I am trying to create a BOM .
I have a created a file for the header and other file for item data .
after assigning the files of header and item , i am getting problem at Read Data step
It is giving an information message Generation canceled: No field with this name.
My Hierarchy at Assign Files is :
ZBGR00 Batch Input Structure for Session Data
    ZBICSK Header Data
           Header C:\Documents and Settings\Raj\Desktop\Input\zbom_zbom_header.txt
        ZBICSP Item Data
               Item C:\Documents and Settings\RajDesktop\Input\zbom_zbom_item.txt
            ZBICSU Sub Item Data
Please let me Know  the Solution .
Regards,
Raj

Answer 1

in the step 5(Maintain Field Mapping and Conversion Rules)
do the syntax check (SHIFT+F2)