Salesforce no longer supports the SOAP login() operation for API versions 65.0 and later. SOAP login() remains temporarily supported for API versions 31.0–64.0, but Salesforce plans to disable it comp

Error Message: INVALID_OPERATION: The SOAP Login operation is not available in the API version specified (67.0)

Solution

Salesforce no longer supports the SOAP login() operation for API versions 65.0 and later. SOAP login() remains temporarily supported for API versions 31.0–64.0, but Salesforce plans to disable it completely in Summer ’27.

As a temporary workaround, set the Salesforce API version to 64.0 or earlier.

For a long-term solution, we recommend migrating to a supported OAuth authentication method, rather than relying on the legacy SOAP login() operation. For details regarding OAuth visit COZYROC documentation here.