Hi,
Setting in both lines? Are you talking about supply-site in MC of site master?
In that case if 2 lines exist with different DC's as supply source then - priority will be considered . There a field which defines the priority .
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Supplying site priority
If a number of supplying plants are to be valid for a plant or plant group at the same time/during the same period, you must enter a priority for supply source determination.
If supply source determination finds several supplying plants that are valid for a plant or plant group at the same time/during the same period, the system checks the sequence of priority; the supplying plant with value 00 has the highest priority. This means that the system first checks the supplying plant with priority 00 to determine whether it can be used as the supply source.
In the standard system, there is a check on whether listing conditions exist for a material. A user exit can be used for further checks (e.g. availability)." SAP EXPLANATION"
