vehicle network toolbox: is there any limitation in importing messages from a log?

Dear all,

I have several logged CANBUS data. Using the standard j1939 database, I have found that I am not able to interpret all messages using the function j1939ParameterGroupImport. For example, I can interpret message 'EEC1', but not messages like 'GPM13', 'GPM14', 'GPM15'. Is there any limitation to the messages that the function j1939ParameterGroupImport can import?

Just for your reference, here you can see how I called the function:

J1939DB=canDatabase('.\dbc\j1939.dbc');
pgs=j1939ParameterGroupImport(ASCFileName,'Vector',J1939DB);

thank you for your help.

Best regards,

Michele