Not able to generate unique id of duplicate node value in xslt

Below is my input xml and I want to generate output based on supp-part-number.Currently if the supp-part-num is duplicate then it not generate separate block. I mention below is current output and expected output format.

Input xml:
           <array-list total="4">
        <catalog-publish-vO rec-no="1">
            <short-desc>NLCTVBL Cable Clips - Round Cable 5-7mm Black</short-desc>
            <err-msg>2</err-msg>
            <supp-part-num>1101</supp-part-num>
        </catalog-publish-vO>
        <catalog-publish-vO rec-no="0">
            <short-desc>NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</short-desc>
            <err-msg>2</err-msg>
            <supp-part-num>1101</supp-part-num>
        </catalog-publish-vO>
        <catalog-publish-vO rec-no="1">
            <short-desc>NLCTVBL Cable Clips - Round Cable 5-7mm Black</short-desc>
            <err-msg>2</err-msg>
            <supp-part-num>1101</supp-part-num>
        </catalog-publish-vO>
        <catalog-publish-vO rec-no="0">
            <short-desc>NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</short-desc>
            <err-msg>2</err-msg>
            <supp-part-num>1101</supp-part-num>
        </catalog-publish-vO>
    </array-list>

Current output:
                <array-list exceeds="" total="4">
        <catalog-publish-vO>
            <part>part_1101</part>
            <pendingItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black</description>
            </pendingItem>
            <approvedItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</description>
            </approvedItem>
            <pendingItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black</description>
            </pendingItem>
            <approvedItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</description>
            </approvedItem>
        </catalog-publish-vO>
    </array-list>

 Expected output format:
           <array-list exceeds="" total="4">
        <catalog-publish-vO>
            <part>part_1101</part>
            <pendingItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black</description>
            </pendingItem>
            <approvedItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</description>
            </approvedItem>
            </catalog-publish-vO>
            <catalog-publish-vO>
            <pendingItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black</description>
            </pendingItem>
            <approvedItem>
                <description>
                     Description :
                    NLCTVBL Cable Clips - Round Cable 5-7mm Black - 1050151244 (100 Pack)</description>
            </approvedItem>
        </catalog-publish-vO>
    </array-list>