BAPI/FM to create/modify customers marked as consumers

Dear ABAP Experts,

we are currently developing an interface between a Microsoft CRM System and a SAP System.

We are getting Customers which are stored inside the CRM system and want to insert /update them also in our SAP Backend System. For that we are using the class/method cmd_ei_api=>maintain_bapi.

Our customer now wants to insert customers as consumers. With the class mentioned above this is not possible. I am now looking for a Function Module or Class which can be used to create or modify customers which are marked as consumers.

I have searched already hours but found nothing that fits our needs.

Has anyone ever made experience with this topic. Please let me know, it's very urgent!

Thanks and best regards

Patrick