Digital Twin Graph

eclipse-ibeji · May 10, 2024 · 9bd59df · 9bd59df
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diff --git a/docs/design/modules/digital_twin_graph/.accepted_words.txt b/docs/design/modules/digital_twin_graph/.accepted_words.txt
@@ -2,6 +2,7 @@ Agemo
 App
 com
 DTDL
+DTMI
 freyja
 Freyja
 github

diff --git a/docs/design/modules/digital_twin_graph/README.md b/docs/design/modules/digital_twin_graph/README.md
@@ -38,11 +38,11 @@ The Managed Subscriber Service is an optional service that provides integration
 
 The Digital Twin Graph will use a variety of identifiers. We will discuss the purpose of each.
 
-The provider ID is the identifier for a Digital Twin Provider.
+The provider ID is the identifier for a Digital Twin Provider. The provider ID must be universally unique and it is up to the provider to ensure this.
 
-The model ID is the identifier for a DTDL fragment.  It is expressed as a [DTMI](https://github.com/Azure/opendigitaltwins-dtdl/blob/master/DTDL/v3/DTDL.v3.md#digital-twin-model-identifier).
+The model ID is the identifier for a DTDL fragment. It is expressed as a [DTMI](https://github.com/Azure/opendigitaltwins-dtdl/blob/master/DTDL/v3/DTDL.v3.md#digital-twin-model-identifier).
 
-The instance ID is the identifier for a digital twin entity. A digital twin may be decomposed into digital twin entities. Each digital twin entity is defined by a fragment of the digital twin's model (specified in DTDL).
+A digital twin may be decomposed into digital twin entities. Each digital twin entity is defined by a fragment of the digital twin's model (specified in DTDL). The instance ID is the identifier for a digital twin entity. The instance ID must be universally unique.
 
 ## <a name="operations">Operations</a>
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@@ Expand Up / @@ -2,6 +2,7 @@ Agemo @@
     App
     com
     DTDL
+    DTMI
     freyja
     Freyja
     github
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