Error in creating BP Customer via API

[GiuseppeB]

Dear Experts,

we are trying to create a new customer throught API:

PATCH https://xx-api.s4hana.cloud.sap/sap/opu/odata/sap/API_BUSINESS_PARTNER/A_Customer(Customer='CC0010') 

We have already created the BP general's data (Business Partner(Gen.) 000000) with the API:

POST https://xxx-api.s4hana.cloud.sap/sap/opu/odata/sap/API_BUSINESS_PARTNER/A_BusinessPartner 

but we get the following error:

<?xml version="1.0" encoding="utf-8"?>

<error xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">

    <code>/IWBEP/CM_MGW_RT/020</code>

    <message xml:lang="en">Resource not found for segment 'A_CustomerType'</message>

    <innererror>

        <application>

            <component_id>LO-MD-BP</component_id>

            <service_namespace>/SAP/</service_namespace>

            <service_id>API_BUSINESS_PARTNER</service_id>

            <service_version>0001</service_version>

        </application>

        <transactionid>63B568C79CA901E0E0065D41A20679BB</transactionid>

        <timestamp>20240220092427.0382470</timestamp>

        <Error_Resolution>

            <SAP_Transaction>For backend administrators: use ADT feed reader "SAP Gateway Error Log" or run transaction /IWFND/ERROR_LOG on SAP Gateway hub system and search for entries with the timestamp above for more details</SAP_Transaction>

            <SAP_Note>See SAP Note 1797736 for error analysis (https://service.sap.com/sap/support/notes/1797736)</SAP_Note>

        </Error_Resolution>

        <longtext_url>/sap/opu/odata/iwbep/message_text;o=LOCAL/T100_longtexts(MSGID='%2FIWBEP%2FCM_MGW_RT',MSGNO='020',MESSAGE_V1='A_CustomerType',MESSAGE_V2='',MESSAGE_V3='',MESSAGE_V4='')/$value</longtext_url>

        <errordetails>

            <errordetail>

                <ContentID/>

                <code>/IWBEP/CX_MGW_BUSI_EXCEPTION</code>

                <message>Resource not found for segment 'A_CustomerType'</message>

                <longtext_url>/sap/opu/odata/iwbep/message_text;o=LOCAL/T100_longtexts(MSGID='%2FIWBEP%2FCM_MGW_RT',MSGNO='020',MESSAGE_V1='A_CustomerType',MESSAGE_V2='',MESSAGE_V3='',MESSAGE_V4='')/$value</longtext_url>

                <propertyref/>

                <severity>error</severity>

                <target/>

                <transition>false</transition>

            </errordetail>

        </errordetails>

    </innererror>

</error>

Could you kindly tell me how to solve the problem?

Is there a log on S4 Public where I can go to see these errors?

thanks in advance

Giuseppe

[Vincent_Zhu]

We have App OData Error log to see the errors in OData API calls. https://fioriappslibrary.hana.ondemand.com/sap/fix/externalViewer/index.html#/detail/Apps('F6961')/S...