can't use procedure in the .rdl file.

Hi experts,

I created a simple River project, and I can active the project successfully.

But when i added some codes to call a procedure, then i can't active the rdl file.

This is the code I used to call a procedure:

action callExternalProc2() : DecimalFloat[]

     {

      let x  = sap.hana.catalog.RIVERPRJ.MY_PROCEDURE_TEST3();

      return x;

     }

The error message met when active the project is:

A transaction rollback may have left the object in an inconsistent state.

exception 40183:

repository/base/activation/activator.cpp:884

Transaction rollback detected. Activation failed.

When i commented the above codes, the activation will be successful.

And the procedure can execute in SQL console.

Can you give me some suggestions?