Read messages error in Protocol

Hi,

I have used the BAPI "BAPI_MATERIAL_MAINTAINDATA_RT" in order to manage material master data. But this BAPI creates a protocol that I we can see in SLG1 transaction. But my works needs these messages in my report and thus, I would like to retrieve them. Do you know a way in order to retrieve this "error" messages?

Thank you very much of your understanding

best regards