In Sage X3 we can create Journal through import template also sage X3 provides a global parameter in which we can set default entry type using which journal should be created.
Navigate To: Setup>General parameters>Parameter Values>
Under Chapter Accounting >DEF> Parameter SCHIMPV5 (Entry transaction (import))
The entry transaction code to be assigned as the default entry transaction when a journal is imported is entered in this parameter.
In this way, by default we can set the entry transaction type for Journal type.