Issue with calling a HDB-Procedure from AMDP

Hi,

i hope someone can help me.

I have created a procedure within HANA-WebIDE:

It is callable by another proc without any problem.

But when I try to call it via my AMDP i get some strange error messages:

Any ideas what these messages want to tell me?

System is on 750SP3 HDB Rel 1.00.112.

TIA

Joachim