HI Vishnu
Suppose you have material x and it is having starting point A and End point as B so you maintain all the points which as been said by Expert Mr Rahul Special procurement key in material master in End point of plant . When you cif it automatically creates T-Lane .similarly you add any new materials between Start point and End point it will automatically creates T-Lane .
You has to mantain Purchasing info record, contract & sch. agreement,
and Special procurement key in material master in the end point of Plant .
Regards
Virender