How can I get C or S number to register in ES workplace?

Hi,

I do want to register for ES workplace.

I could not do that because of guest logon(P number).

My company is Business One B1 partner with SAP.

It seems that partners or customers are supposed to have C or S number.

Shall we get C or S number?

If yes, how could I get it?

Please clarify.

Regards,

Bala Raja