HSDL template to load absence entry with advance absence attribute

I have to load absence entry for a person on weekend for that we need to use advance attributes. I am trying to use advance attributes with parent attributes but hsdl is giving a error "You must provide a valid reference to the parent record. Ensure that the parent record is supplied in the same file, or has already been created. You can reference the parent record using one of the four supported key types. The View Business Objects task lists the attributes that you can use to identify the parent record for this component." Although it was succesfull using