these type of transactions can be executed only by virtue of E-1 coverage under sec 6(2) of CST act 1956, whiere the goods are consgined out of state to buyer, and buyer redirect the goods on way to 3rd party by endorsement of transport documents.
here the caution has to be maintained that the final receipent of goods is unknown to the supplier of 1st atage till the dispatch of goods, and its done by intermediate buyer only after receipt of transport documents and by way of endorsement only.
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in your case movement is as under
goods moved
xyz>abc
bills made
xyz>gujrat>abc
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means goods were never booked or transported to gujrat at all. so CST does not comes in picture.
however if goods are consigned to gujrat and then re routed to abc by way of endorsement of L/R or consignment note, then it was possible.
for details read sec 6(2) of CST act 1956