The current version in most - if not all - instances in 2.4.
You can find the exact version on Admin - SOAP
The current on you instance is likely to be
where XXX-YYY-ZZZ is the unique ID.
Thanks for your reply.
I checked on Admin -> Web Services -> SOAP API page.
In SOAP EndPoint API version 2_4 is mentioned (https://XYZ7.mktoapi.com/soap/mktows/2_4 )
But if we check SOAP API documentation (http://developers.marketo.com/documentation/soap)
It is mentioned there that latest version is 2.3-
The Marketo WSDL contains the service and schema definition and can be queried at the following URL: http://app.marketo.com/soap/mktows/2_3?WSDL .
Latest API Version: 2_3
Can you please link for documentation of API version 2_4 .