BAPI_REQUISITION_CREATE/ with services and Contract

Dear Experts,

i must create with the BAPI "BAPI_REQUISITION_CREATE'" an REQUISITION with services and relation to an existing contract.

I fill the import table

t_bapiesucc-con_number = '00482321732' " existing Contract number.

t_bapiesucc-con_item = '10'. " order item

.........

CALL FUNCTION 'BAPI_REQUISITION_CREATE'

IMPORTING

number = lv_number

TABLES

requisition_items = it_bapiebanc

requisition_item_text = it_bapiebantx

requisition_account_assignment = it_bapiebkn

requisition_limits = it_bapiesuhc

REQUISITION_CONTRACT_LIMITS = it_bapiesucc

requisition_services = it_bapiesllc

requisition_services_text = it_bapieslltx

requisition_srv_accass_values = it_bapiesklc

extensionin = it_bapiparex

return = lt_return.

But the conecting of the contract does not works.

Greetings

Frank