Unable to update Task Finish Date using Oracle REST API/SOAP

Summary:

Hi Team,

I am trying to update the task finish date using the below API. It is not throwing any error but not getting updated. Except Task Finish Date other columns are getting updated. The current finish date column is getting updated every time when I update the task finish date.

https://*********/fscmRestApi/resources/11.13.18.05/projects/300000020162351/child/Tasks/00040000000EACED0005770800005AF34DD558360000000EACED0005770800005AF34DD5583E0000000EACED0005770800005AF34DD5584CFFFFFFFF

Payload:

{

    "TaskFinishDate": "2025-06-28"

}

SOAP:{{ProjectTaskServiceSoapHttpPortBaseUrl}}/fscmService/ProjectTaskServiceV2

Payload:

    <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:typ="http://xmlns.oracle.com/apps/projects/foundation/projectDefinition/publicService/maintainProjectV2/types/"