Hi, it sounds like the certificate holder or the alternative names do not match the called address. 
Please check the values in the certificate of the server that is returned under this service. 

I miss a bit more context here. What did you try?

Could you show us the SDA container that is causing the problem?
 

Regards

Armin

Hi Ian,

thanks for the hint with the GetValueAt.
I had already tried this once, but discarded it due to a structural problem with the XML and did not try again after correcting the structure.  

🤯

set x = ##class(EnsLib.EDI.XML.Document).%OpenId(554)
set numdoc = x.GetValueAt("Documents(*)")
w numdoc
10

Kind regards

Armin