1. Do Login request and get the Session Id.
Request URL:
https://login.salesforce.com/services/Soap/c/55.0
Request Body:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:enterprise.soap.sforce.com">
<soapenv:Header>
<urn:LoginScopeHeader>
<urn:organizationId>00D8c0000015heN</urn:organizationId>
</urn:LoginScopeHeader>
</soapenv:Header>
<soapenv:Body>
<urn:login>
<urn:username><Your Username></urn:username>
<urn:password><Your Password></urn:password>
</urn:login>
</soapenv:Body>
</soapenv:Envelope>
2. Do a create request to create the Case record.
Request URL:
https://d8c0000015heneaq-dev-ed.my.salesforce.com/services/Soap/c/55.0/0DF8c000000Tam4
Request Body:
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:enterprise.soap.sforce.com" xmlns:urn1="urn:sobject.enterprise.soap.sforce.com">
<soapenv:Header>
<urn:SessionHeader>
<urn:sessionId>
00D8c0000015heN!AQkAQIzbd4MRQvfPQsq79RyOFBAdhKvz_HXZxo6dCm6p
</urn:sessionId>
</urn:SessionHeader>
</soapenv:Header>
<soapenv:Body>
<urn:create>
<urn1:sObjects xsi:type="Case" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Type>Other</Type>
<Subject>Testing</Subject>
<Status>New</Status>
<Origin>Web</Origin>Origin>
<urn1:RecordType><urn1:Name>Service Request</urn1:Name></urn1:RecordType>
</urn1:sObjects>
</urn:create>
</soapenv:Body>
</soapenv:Envelope>
Output: