MM - SUS: transfer text of the purchase order from R/3 to SRM

Dear gurus,

I 'm implementing a scenario of plan driven procurement with R/3, i have a release of SRM SERVER 5.5,R/3 is connected to sus via XI.

ICan you help me to trasfer text from R/3 purchase order item to Sus purchase order item.?

Best regards.

Alessio Pernasetti