Manage ECC customer partner if the customer partner is a vendor

Hi expert,

for purpose in object, we uploaded in C4C the ECC vendors as business partner with migration tool and we assigned its External ID.

This vendors are partner in ECC customer master data.

When we upload the customer from ECC to C4C and we manage in mapping these vendors partner as ECC standard partner (i.e: RE, RG and WE), in web service monitor we found the error "ID mapping for external value <ECC partner number> of ERP Accounts missing"

This is correct because RE, RG and WE are ERP Accounts.

This is the payload for this vendor partner.

When we upload the customer from ECC to C4C and we manage in mapping these vendor partner as the standard employee partner (i.e.:sales employee), in web service monitor we found the error "ID mapping for external value <ECC partner number> of Mapping of ERP Employees missing".

In this case, in payload for this vendor partner the value of field <PartnerInternalIDTypeCode> is 3.

I suppose that this value meaning that the partner is an employee.

Which is the value to put in <PartnerInternalIDTypeCode> to indicate that searching of External ID must be done on Business Partners?

Thanks and regards.

Daniele Monti