If you have made any customization in Zuora Quotes, you need to perform the following for the dateTime type fields changes and time zone support in Zuora.

• Upgrade the WSDL version in the Zuora Connection Setting

• Upgrade the WSDL version in the Zuora Connection Setting to 80 or higher.
• Review Date Field Changes in the SOAP API for the list of affected fields whose type was changed from dateTime to Date.
• Update your code to reflect the type changes to avoid errors or date mismatching.