Need to update standard receipt DFF using SOAP?

We need to update the Standard Receipt DFF field data for Attribute8 (Bank Charges).Followed Doc ID 2563101.1 and Doc ID 2284586.1 as references. However, the response is always 0, indicating that the update is not being applied successfully.

SOAP service-:https://cloudinstance/fscmService/ErpObjectDFFUpdateService

Request Payload-:

typ:operationModeSingle</typ:operationMode>

     <!--Optional:-->

     <typ:object>

        <!--Optional:-->

        <erp:EntityName>Receivables Invoice</erp:EntityName>

        <!--Optional:-->

        <erp:ContextValue>#NULL</erp:ContextValue>

        <!--Optional:-->

        <erp:UserKeyA>300000107769312</erp:UserKeyA>

        <!--Optional:-->

        <erp:UserKeyB>300000107769312</erp:UserKeyB>

        <!--Optional:-->


        <erp:DFFAttributes>

        {"Bank Charges":"43"}

        </erp:DFFAttributes>

     </typ:object>

     <!--Optional:-->


  </typ:updateDffEntityDetails>

Response-:

<ns0:updateDffEntityDetailsResponse xmlns:ns0="http://xmlns.oracle.com/apps/financials/commonModules/shared/model/erpIntegrationService/types/">