Any CA individual efiled returns that were submitted prior to January 29, 2021 will reject with the following error code:
<ErrorMessage>Your State submission does not match the latest published FTB Schema or is not well formed. You must contact your software provider to resolve this error.</ErrorMessage>
<RuleNumber>X0000-010</RuleNumber>
<DataValue> Line Number: 2. Position: 174. Reason: The 'returnVersion' attribute is invalid - The value '2020v4.0' is invalid according to its datatype 'String' - The Enumeration constraint failed.</DataValue>