Hi Archana
If you are doing component allocation with routing ,
routing for material 1 counter 1 you are choosing alternate Bom 1 or 2 for material.
similarly for Material 1 counter 2 you are choosing alternate Bom 1 0r 2 according to your choice
like this 3 routing groups will get created with each have 2 counters
if you allocate similar kind of material in one group in material allocation tab & you are going for component allocation it will assign one material bom.
second material bom will not get assigned to the operation.
if you are not going assign the component at the routing level than you can follow first process.
if you are planning to allocate components at routing level than you have to follow second process.
If have any more doubt kindly revert back with your query.
Thanks & Regards
Sandeep Kumar Praharaj