Multiple Plants in a single SC

Hello SRM Experts,

We working with an SRM 5.0 system - classic scenario. We like to create a SC with two Positions with different plants. The plants and storage locations are correct maintained for the materials in Backend System, but we got following backend error message:

<b><i>Shoppingcart 0100044773 (Res. 0400005452): M7 503 no storage location for 000000000000127057 in 1500 3000 </i></b>

Is it actually possible to create a SC with different plants?

Kind regards

Axel