I'm searching for an example how to call method for to Read RFID tag on SIMATIC RF186C under NodeRed passing correct input parameters:

{"Identifier":1,"CodeType":"RAW:BYTES","Region":3,"Offset":0,"Length":100}

I always receive errors "Invalid NodeId: TypeError: Cannot convert undefined or null to object.

Any helps is appreciate.

I changed my account to the correct one.

Thank you for your reply but I can't find examples for NodeRed OpcUa-Method.

Sorry, I overread, that you asked for NodeRed. I can't really help you with that.

A possible hint:

Try using a different OPC-client, that can successfully call the method. Then use wireshark to trace the successfull and the unsuccessfull call (using unencrypted communication). Then compare them.