Intercompany Stock Transfer in Retail

Dear Experts,

I have the following issue:

we need to customize intercompany stock trasfer in Retail system (ECC 6).

I not how to do it in normal SAP.

Is it different in Retail?

I cannot assign Sales Org/Distr Channel/Division and Customer to the plants in "Set Up Stock Transport Order".

There is no plants created for Retail (with T001W-VLFKZ field not empty).

Does it mean that intercompany stock transfer is configured differently in Retail (different customizig transactions)?

If yes where can I find detailed description of configuration steps for intersompant stock transfer in Retail?

Thanks in advance.