To get around this error, CData adapters have a field called '
SSLServerCert'. The user can go to the datasource page and then set the value to
* for the SSLServerCert. The '*' signifies accepting all certificates (Snapshot for reference)
However, apart from the above workaround, the user can request their respective admins (e.g: Salesforce admin) to provide the appropriate certificate chain which can be added to the cis_server_truststore.jks, and then point the adapter to the certificate path.
NOTE: Kindly refer to the documentation link pasted in the 'Reference' section for more information on the 'SSLServerCert' field.