Thank you Abhi for you quick response.
The idea you had, explains exactly the problem that I had.
I worked with Ontap version 9.0 and even the most recent nmsfk perl bindings weren't good enogh, because there is a new property/column for Snapmirrors:
###########################
trinidad::*> snapmirro show -destination-path svm_rtoubali_dr_dest: -fields OPmask
(snapmirror show)
source-path destination-path opmask
------------- --------------------- ----------------
svm_rtoubali: svm_rtoubali_dr_dest: ffffffffffffffff
###########################
However, our customer uses ontap 8.3.2 and with this version the Problem does not appear.