stock transport oredrs

Hi experts,

what are the necessary steps to make STO between two plants ( different company codes ) ?

how we maintain the sending plant as a vendor at receiving plant ?

at the time STO can we give the vendor number as that sending plant number in receiving plant ?

how can we maintain the vendor master data for the sending plant at the receiving plant ( what views are maintained ),

how can we maintain the customer data for receiving palnt in sending plant ( is it in MM part ) ?

i appretiate for your valuable guidence,

will award point

Thanks & Regards