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OMF with PI Web API

Type messages

  • Last UpdatedSep 04, 2025
  • 1 minute read

A type message creates resources in an on-premises PI System. The message is comprised of a header that defines the message type and a body that contains the message content in the form of keywords. For an example of a generic type message, see the OMF v1.2 Specification.

Type messages can be of the following categories:

  • Static

  • Dynamic

  • Enumeration

Creating a static or dynamic type will result in an AF Element Template. Creating an enumeration type will result in an AF Enumeration Set and possibly a DA Digital State Set. For more information on circumstances in which a DA Digital State Set is created, see Type message limitations.

Note: Deleting a type will delete the associated AF Element Template or AF Enumeration Set/DA Digital State Set.

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