Winncc Online licence check

Dear Experts,

Currently I am working on pcs7 V8.1. We have used CPU410 F/H with failsafe programming. In our project one Engineering/Operator Station and one Reference Operator Station.

There is almost 1 month after commissioning of plant, and now one pop is coming on the OS pc saying some licence missing (Please find attached image file)

How cum suddenly such a popup appear, what might be the reason.

We have the same system with same licence and same plant  at another location also, but there is everything fine and no such a pop up message, both locations were commissioned simultaneously at the same time.

Please help me and give your suggestions...

Hello niksss,

normally you see your licenses in the ALM.

If you have two separate OS/ES mostly you need also two licenses for each PC.

Please contact the technical support for license supporting:

https://support.industry.siemens.com/cs/ww/en/sc/2090

For a quicker help, attach a screenshot of the installed software and the popup-window of this entry in the technical support ticket.