While creating a metadata connection to Salesforce in Talend Studio, the connection test fails with the following error message:
"SOAP API login() is disabled by default in this org. exceptionCode='INVALID_OPERATION'"
INVALID_OPERATION
Resolution
To resolve this issue, a Salesforce administrator must explicitly enable SOAP API login access in the org before it can be used.
Even when enabled, login() remains unavailable in API version 65.0 and later.
Cause
This error occurs when Talend Studio attempts to authenticate with Salesforce using the SOAP API, but SOAP-based login access is disabled at the Salesforce organization level. As a result, Talend is unable to establish the metadata connection and retrieve Salesforce objects.
The issue is typically related to Salesforce security or API access settings, such as disabled SOAP API access.