Let's discuss at a Face-to-Face.

Another requirement would be to have just the Method name defined on a base type and to define the parameters on a specific type or instance.

Example are the method browse name defined in OPC UA to create instances or the Start and Stop method browse names defined in the PLCopen model. There is currently no way to provide such Methods in a NodeSet.

We need these features in the companion working groups

• MDIS
• FDI
• AutoID

This feature request recently surfaced in the Open-SCS working group and it's also of interest for the ISA 95 models.
Would be good to report an update on this request. Please let me know if there is anything I can help (requirements, tests, etc).

Add optional property DefaultInputValues to Table 10 – Method NodeClass.
DataType: BaseDataType[]
Shall have the same size as the InputArguments array if present.

Added description for handling of optional input arguments based on new property DefaultInputValues.

Made changes in document version OPC UA Part 4 - Services 1.04 Specification Draft 07.docx

Agreed to text edited in telecon.

The feature was removed from Part 3 1.04 release.

Removed the following text from
Table 65 – Call Service Parameters
inputArguments []
If a Method has optional input arguments, these optional input arguments are indicated by the method’s DefaultInputValues Property. In this case fewer arguments than the total number of input arguments defined may be passed by the Client. The InputArguments and DefaultInputValues Property are defined in Part 3.

This feature was added with OPC 10001-3 - UA Specification 1.04 Amendment 3 - Method Metadata.

This is already integrated in OPC UA 1.05

Agreed to close - feature is already in 1.04 amendment.