Servers performing delivery to the inbox or sharedInbox properties of actors on other servers MUST provide the object property in the activity: Create, Update, Delete, Follow, Add, Remove, Like, Block, Undo.

Requirement

Servers performing delivery to the inbox or sharedInbox properties of actors on other servers MUST provide the object property in the activity: Create, Update, Delete, Follow, Add, Remove, Like, Block, Undo.

Origin

The origin of this requirement is a quote from the ActivityPub specfiication:
prefixan Activity being created in an actor's outbox or inbox which references another object.
Servers performing delivery to the inbox or sharedInbox properties of actors on other servers MUST provide the object property in the activity: Create, Update, Delete, Follow, Add, Remove, Like, Block, Undo.
suffix Additionally, servers performing server to server delivery of the following activities MUST also provide the target property: Add, Remove.
https://www.w3.org/TR/activitypub/ , § 7

id

urn:uuid:c274b155-edbd-4676-bbf2-4a2499accf7e

uuid

c274b155-edbd-4676-bbf2-4a2499accf7e

Full JSON

{
  "id": "urn:uuid:c274b155-edbd-4676-bbf2-4a2499accf7e",
  "uuid": "c274b155-edbd-4676-bbf2-4a2499accf7e",
  "type": "Behavior",
  "content": "Servers performing delivery to the inbox or sharedInbox properties of actors on other servers MUST provide the object property in the activity: Create, Update, Delete, Follow, Add, Remove, Like, Block, Undo.\n",
  "tag": [
    {
      "name": "ActivityPubServer",
      "id": "https://socialweb.coop/tag/ActivityPubServer"
    }
  ],
  "context": [
    "https://www.w3.org/TR/activitypub/",
    {
      "name": "Server to Server Interactions",
      "id": "https://www.w3.org/TR/activitypub/#server-to-server-interactions"
    }
  ],
  "origin": {
    "source": "https://www.w3.org/TR/activitypub/",
    "section": {
      "id": "https://www.w3.org/TR/activitypub/#server-to-server-interactions",
      "branch": [
        7
      ]
    },
    "selector": {
      "type": "TextQuoteSelector",
      "prefix": "an Activity being created in an actor's outbox or inbox which references another object.\n",
      "exact": "Servers performing delivery to the inbox or sharedInbox properties of actors on other servers MUST provide the object property in the activity: Create, Update, Delete, Follow, Add, Remove, Like, Block, Undo.\n",
      "suffix": "Additionally, servers performing server to server delivery of the following activities MUST also provide the target property: Add, Remove.\n"
    }
  },
  "@context": [
    "https://www.w3.org/ns/activitystreams",
    "https://socialweb.coop/ns/testing/context.json"
  ]
}

Links