Trying to browse Rockwell tags in KepserverEX 6

[AG_10897737]

Tag XX on device XX.XXX was not imported . Item Failed OPC server validation.

When i created new project in Studio 5000, I am able to browse the tag. But when i tried to browse tags from Control Logix PLC program provided by customer, gets above error. 

[cmorehead]

@AG_10897737 

Please take a look at the Kepware Knowledge base article in the following link:

Article - CS388921 - Derived tags not allowing Arithmetic Function with String Tag in a single Expression in PTC Kepware Products

You may have used some restricted characters in your Item ID names. Here is a link to the page in the manual that covers the restricted characters that cannot be used.

https://www.ptc.com/store/-/media/kepware-store/en/manuals/allen-bradley-controllogix-ethernet-manual.pdf#page=75

Thanks,

*Chris