Secondary NC Entry in VTR POD not possible

Hi experts,

when trying to log a secondary NC code in the VTR POD the Add-Done and Add buttons are greyed out.

I log the primary NC Code "REWORK" at a assembly operation with the Touch operation POD.

After that I use the VTR POD for a rework operation. There I start the SFC at the operation then choose the primary NC code "REWORK" in the NC Data Tree. After that the Add and Add-Done buttons are greyed out (see picture below).

The primary code is configured the following:

The secondary code:

The NC group Primary is primary is assigned to a assembly operation. The NC group secondary is assigend to a validation operation.

Does someone of you know, why I can't Add a secondary NC code?

Thanks in advance,

Nico