Import an Oracle APEX Application export file from a higher version into a lower version

Follow the below process to know how and where to change required details:

• Create one dummy application in target instance and export it
• Compare export files from source instance and target instance as shown in below table. It can be seen that the p_version and p_release parameter values are different in both the files

In source instance (18.1)  begin wwv_flow_api.import_begin (  p_version_yyyy_mm_dd=>'2018.04.04' ,p_release=>'18.1.0.00.45' ,p_default_workspace_id=>XXXXXXX ,p_default_application_id=>XXXXXX ,p_default_owner=>'XXX' ); end;

In target instance (5.1.4) begin wwv_flow_api.import_begin (  p_version_yyyy_mm_dd=>'2016.08.24' ,p_release=>'5.1.4.00.08' ,p_default_workspace_id=>XXXXXXX ,p_default_application_id=>XXXXXXX ,p_default_owner=>'XXXX' ); end;

• So, change the parameter values of import_begin procedure in source export file. For e.g., the release and the version parameters in export file
  from ‘18.1.0.00.45’  to ‘5.1.4.00.08‘ and
  from    ‘2018.04.04’    to ‘2016.08.24’ respectively
• Import edited export file in target instance this time it will allow you to run the script