FSCM - Promise to Pay - use of function module

Dear Colleagues,

in my company, we are currently looking into the possibility of automating the creation of Promise to Pay records.

I know we have function module FDM_P2P_CREATE but when I test it in SE37, I am getting message UDM 064 (case type not found).

In import parameter IS_P2P_PARTNER, I have included my system as LOGSYS, OBJ_TYPE = BSEG, OBJ_KEY = key (concatenation of company code, document number, year and item).

In import parameter, IT_P2P_INVOICE, I have included in ASSIGNED_P2P_AMOUNT, the promissed amount and currency in P2P_CURR.

In import parameter IT_P2P_ATTR, I have included 2 attributes ID: FIN_PROMISED_AMT and FIN_P2P_DUE_DATE.

Would any of you have experience using this function module that could guide me on what is missing?

Thank you in advance,

Karel