Hi Greg,
I did created an another key for the category code and everything is fine but how i have to create the if statement like
<xsl:if test="generate-id($categorygroup[1])=generate-id() and generate-id($group[1])=generate-id()">
but it is not giving me the result i want, if i use one by one it is working but i need to put in same if statement with and operator. i mailed my xsl and input instance file.