Retail:Support project role

Hi experts,

I am in "support project" now.I know how to create article (MM41).After creation of article when and where i will find the IDOC for article (WP_PLU01).After finding the IDOC number of the artilce what i have to do.I want "complete role" of an "support project SAP IS-Retail functional consultant" in support project. Hope you understand my query.Expecting complete and clear answer for SAP Experts.Thanks in advance.

Regards

Sandhya