retrieving the possible errors from bom bapi

Hi..

I am doing the scenario for creating the MBOM in SAP through XI, actually the data is coming from windchill and while uploading the BOM structure successully i am getting the success message as a response but during failures i am getting the code with 3 digit numbers,

For creation of material master BAPI_MATERIAL_SAVEDATA

I can explore it by going to Tcode se91 which is a messag class and from ther i can see the error messages from MM and M3,MG etc..

Like this i need the list of errors for the BAPI_BOM_UPLOAD_SAVE..

regards

Kishore