EM, Impaired msg in Device List

Hi,

 

 

I didn't find entry in Ask F5 that refer to these error messages and nothing in official documentation. In the Device List, with EM 2.3 (It was the same with EMv2.2), I have some box with the warning message:

 

 

For these three version: BIG-IP 10.2.2 (Build 852.0), BIG-IP 11.1.0 (Build 1943.0), BIG-IP 10.2.2 (Build 852.0)

 

getNodeConfig: iControl error: 'iControl::char*:SOAPException: 'Cannot convert a struct to a string.''

 

 

What's that?