BAPI_ACTIVITYCRM_CREATEMULTI - PARTNER ERROR

Hi all !

I am creating activities in CRM using the BAPI BAPI_ACTIVITYCRM_CREATEMULTI filling header, partner and reason structures.The activity is being created but the partner information is not filled.

The error message displayed is: Enter (Company) partner.

The fields that I fill are: ref_guid = guid

ref_kind = 'A'

ref_partner_handle = 0001

partner_fct = partner_function

partner_no = partner_number

kind_of_entry = 'C'

display_type = 'BP'

no_type = 'BP'

Did someone get this difficulty and can help me

Thanks