Purchase of spares

Dear All
I have a requirement to purchase spare parts for my  plant,
The problem is the part number of the spare part is different for different vendor
how do i maintain material number for same part with different part number supplied by vendor.
example:
The part number for eg shaft is X for vendor 1, but for the same Shaft the part number is Y for vendor 2, now how do i maintain different part number for the same matereial,
Suggestion will be worth appreating.
Regards
SARFRAZ

Dear Anji
I purchse a spart part called shaft from a company X, the manufacturing no is 001, which i have to maintain in my SAP to order the materail Shaft,but if the same shaft is purchased from a different vendor who has a different manufacturer than it has a  different manufacturer number eg 002, so how do i maintain two different materail numbber for same materail.
if it is manufactured by  3 different vendors than do  i have to maintain 3 materail master...
there should be some means by which i can maintain vendors materail number.

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