Rename Optional attribute requirement level to Opt-In

semantic_conventions/resource/cloud_provider/heroku.yaml

@@ -10,16 +10,16 @@ groups:
         brief: >
           Time and date the release was created
         examples: [ '2022-10-23T18:00:42Z' ]
-        requirement_level: optional
+        requirement_level: opt_in
       - id: release.commit
         type: string
         brief: >
           Commit hash for the current release
         examples: [ 'e6134959463efd8966b20e75b913cafe3f5ec' ]
-        requirement_level: optional
+        requirement_level: opt_in
       - id: app.id
         type: string
         brief: >
           Unique identifier for the application
         examples: [ '2daa2797-e42b-4624-9322-ec3f968df4da' ]
-        requirement_level: optional
+        requirement_level: opt_in

semantic_conventions/trace/http.yaml

@@ -149,5 +149,5 @@ groups:
             if it's sent in absolute-form.
           - Port identifier of the `Host` header
       - ref: net.sock.host.addr
-        requirement_level: opt-in
+        requirement_level: opt_in
       - ref: net.sock.host.port

specification/resource/semantic_conventions/cloud_provider/heroku.md

@@ -9,9 +9,9 @@
 <!-- semconv heroku -->
 | Attribute  | Type | Description  | Examples  | Requirement Level |
 |---|---|---|---|---|
-| `heroku.release.creation_timestamp` | string | Time and date the release was created | `2022-10-23T18:00:42Z` | Optional |
-| `heroku.release.commit` | string | Commit hash for the current release | `e6134959463efd8966b20e75b913cafe3f5ec` | Optional |
-| `heroku.app.id` | string | Unique identifier for the application | `2daa2797-e42b-4624-9322-ec3f968df4da` | Optional |
+| `heroku.release.creation_timestamp` | string | Time and date the release was created | `2022-10-23T18:00:42Z` | Opt-In |
+| `heroku.release.commit` | string | Commit hash for the current release | `e6134959463efd8966b20e75b913cafe3f5ec` | Opt-In |
+| `heroku.app.id` | string | Unique identifier for the application | `2daa2797-e42b-4624-9322-ec3f968df4da` | Opt-In |
 <!-- endsemconv -->
 
 **Mapping:**

specification/trace/semantic_conventions/http.md

@@ -240,16 +240,16 @@ Given an inbound request for a route (e.g. `"/users/:userID?"`) the `name` attri
 If the route cannot be determined, the `name` attribute MUST be set as defined in the general semantic conventions for HTTP.
 
 <!-- semconv trace.http.server(full) -->
-| Attribute  | Type | Description  | Examples  | Requirement Level                                     |
-|---|---|---|---|-------------------------------------------------------|
+| Attribute  | Type | Description  | Examples  | Requirement Level |
+|---|---|---|---|---|
 | `http.route` | string | The matched route (path template in the format used by the respective server framework). See note below [1] | `/users/:userID?`; `{controller}/{action}/{id?}` | Conditionally Required: If and only if it's available |
-| `http.target` | string | The full request target as passed in a HTTP request line or equivalent. | `/path/12314/?q=ddds` | Required                                              |
-| `http.client_ip` | string | The IP address of the original client behind all proxies, if known (e.g. from [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For)). [2] | `83.164.160.102` | Recommended                                           |
-| `http.scheme` | string | The URI scheme identifying the used protocol. | `http`; `https` | Required                                              |
-| [`net.host.name`](span-general.md) | string | Name of the local HTTP server that received the request. [3] | `localhost` | Required                                              |
-| [`net.host.port`](span-general.md) | int | Port of the local HTTP server that received the request. [4] | `8080` | Conditionally Required: [5]                           |
-| [`net.sock.host.addr`](span-general.md) | string | Local socket address. Useful in case of a multi-IP host. | `192.168.0.1` | Opt-In                                                |
-| [`net.sock.host.port`](span-general.md) | int | Local socket port number. | `35555` | Recommended: [6]                                      |
+| `http.target` | string | The full request target as passed in a HTTP request line or equivalent. | `/path/12314/?q=ddds` | Required |
+| `http.client_ip` | string | The IP address of the original client behind all proxies, if known (e.g. from [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For)). [2] | `83.164.160.102` | Recommended |
+| `http.scheme` | string | The URI scheme identifying the used protocol. | `http`; `https` | Required |
+| [`net.host.name`](span-general.md) | string | Name of the local HTTP server that received the request. [3] | `localhost` | Required |
+| [`net.host.port`](span-general.md) | int | Port of the local HTTP server that received the request. [4] | `8080` | Conditionally Required: [5] |
+| [`net.sock.host.addr`](span-general.md) | string | Local socket address. Useful in case of a multi-IP host. | `192.168.0.1` | Opt-In |
+| [`net.sock.host.port`](span-general.md) | int | Local socket port number. | `35555` | Recommended: [6] |
 
 **[1]:** MUST NOT be populated when this is not supported by the HTTP server framework as the route attribute should have low-cardinality and the URI path can NOT substitute it.
 SHOULD include the [application root](/specification/trace/semantic_conventions/http.md#http-server-definitions) if there is one.