diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ba1eab7..408c581c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ The file format of it is based on [Keep a Changelog](http://keepachangelog.com/e
 For public Changelog covering all changes done to Pipedrive’s API, webhooks and app extensions platforms, see [public Changelog](https://pipedrive.readme.io/docs/changelog) with discussion area in [Developers Community](https://devcommunity.pipedrive.com/c/documentation/changelog/19).
 
 ## [Unreleased]
+### Fixed
+- Removed `person_id` from the v2 activity request body (`POST /api/v2/activities`, `PATCH /api/v2/activities/{id}`) — the API has always rejected it as read-only, and the schema advertised it as writable; use `participants: [{ "person_id": 123, "primary": true }]` instead. `org_id` is unaffected.
+- Added `required: [name]` to the v2 person create request body (`POST /api/v2/persons`) — a bare call previously reached the API instead of failing client-side.
+- Reworded the `im`, `notes`, `birthday`, and `job_title` field descriptions and the `addPerson`/`updatePerson` operation descriptions (which also cover `postal_address`) to disclose that these fields 403 when contact sync isn't enabled, rather than only describing when they're present on read.
 
 ## [33.7.2] - 2026-10-09
 ### Changed
diff --git a/src/versions/v2/api/persons-api.ts b/src/versions/v2/api/persons-api.ts
index f6520679..44d34ce8 100644
--- a/src/versions/v2/api/persons-api.ts
+++ b/src/versions/v2/api/persons-api.ts
@@ -52,7 +52,7 @@ import { UpsertPersonResponse } from '../models';
 export const PersonsApiAxiosParamCreator = function (configuration?: Configuration) {
     return {
         /**
-         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Add a new person
          * @param {AddPersonRequest} [AddPersonRequest] 
 
@@ -614,7 +614,7 @@ export const PersonsApiAxiosParamCreator = function (configuration?: Configurati
             };
         },
         /**
-         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Update a person
          * @param {number} id The ID of the person
          * @param {UpdatePersonRequest} [UpdatePersonRequest] 
@@ -670,7 +670,7 @@ export const PersonsApiFp = function(configuration?: Configuration) {
     const localVarAxiosParamCreator = PersonsApiAxiosParamCreator(configuration)
     return {
         /**
-         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Add a new person
          * @param {AddPersonRequest} [AddPersonRequest] 
 
@@ -810,7 +810,7 @@ export const PersonsApiFp = function(configuration?: Configuration) {
             return createRequestFunction(localVarAxiosArgs, globalAxios, BASE_PATH, configuration);
         },
         /**
-         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Update a person
          * @param {number} id The ID of the person
          * @param {UpdatePersonRequest} [UpdatePersonRequest] 
@@ -832,7 +832,7 @@ export const PersonsApiFactory = function (configuration?: Configuration, basePa
     const localVarFp = PersonsApiFp(configuration)
     return {
         /**
-         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Add a new person
          * @param {PersonsApiAddPersonRequest} requestParameters Request parameters.
 
@@ -932,7 +932,7 @@ export const PersonsApiFactory = function (configuration?: Configuration, basePa
             return localVarFp.searchPersons(requestParameters.term, requestParameters.fields, requestParameters.exact_match, requestParameters.organization_id, requestParameters.include_fields, requestParameters.limit, requestParameters.cursor, ).then((request) => request(axios, basePath));
         },
         /**
-         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+         * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
          * @summary Update a person
          * @param {PersonsApiUpdatePersonRequest} requestParameters Request parameters.
 
@@ -1323,7 +1323,7 @@ export interface PersonsApiUpdatePersonRequest {
  */
 export class PersonsApi extends BaseAPI {
     /**
-     * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+     * Adds a new person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
      * @summary Add a new person
      * @param {PersonsApiAddPersonRequest} requestParameters Request parameters.
 
@@ -1443,7 +1443,7 @@ export class PersonsApi extends BaseAPI {
     }
 
     /**
-     * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don’t exist by default in Pipedrive and are only created when you set up your contact sync.
+     * Updates the properties of a person. <br>If the company uses the [Campaigns product](https://pipedrive.readme.io/docs/campaigns-in-pipedrive-api), then this endpoint will also accept and return the `marketing_status` field. <br>The `im`, `postal_address`, `notes`, `birthday` and `job_title` fields don\'t exist by default in Pipedrive and are only created when you set up your contact sync — attempting to set any of them without contact sync enabled returns a 403.
      * @summary Update a person
      * @param {PersonsApiUpdatePersonRequest} requestParameters Request parameters.
 
diff --git a/src/versions/v2/models/add-activity-request.ts b/src/versions/v2/models/add-activity-request.ts
index 80a74bf1..76ac0ec0 100644
--- a/src/versions/v2/models/add-activity-request.ts
+++ b/src/versions/v2/models/add-activity-request.ts
@@ -55,11 +55,6 @@ export interface AddActivityRequest {
     */
     'lead_id'?: string;
     /**
-    * The ID of the person linked to the activity
-    * @type {number}
-    */
-    'person_id'?: number;
-    /**
     * The ID of the organization linked to the activity
     * @type {number}
     */
@@ -100,7 +95,7 @@ export interface AddActivityRequest {
     */
     'location'?: AddActivityRequestLocation;
     /**
-    * The participants of the activity
+    * The participants of the activity. Use this to set the activity\'s person — a primary participant (`primary: true`) sets `person_id` on the activity.
     * @type {Array<AddActivityRequestParticipantsInner>}
     */
     'participants'?: Array<AddActivityRequestParticipantsInner>;
diff --git a/src/versions/v2/models/add-person-request.ts b/src/versions/v2/models/add-person-request.ts
index 4a7afe63..df8f7cd5 100644
--- a/src/versions/v2/models/add-person-request.ts
+++ b/src/versions/v2/models/add-person-request.ts
@@ -36,7 +36,7 @@ export interface AddPersonRequest {
     * The name of the person
     * @type {string}
     */
-    'name'?: string;
+    'name': string;
     /**
     * The ID of the user who owns the person
     * @type {number}
@@ -78,22 +78,22 @@ export interface AddPersonRequest {
     */
     'postal_address'?: PersonItemAddress;
     /**
-    * Contact sync notes of the person, maximum 10 000 characters, included if contact sync is enabled for the company
+    * Contact sync notes of the person, maximum 10 000 characters. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'notes'?: string;
     /**
-    * The instant messaging accounts of the person, included if contact sync is enabled for the company
+    * The instant messaging accounts of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {Array<PersonItemIm>}
     */
     'im'?: Array<PersonItemIm>;
     /**
-    * The birthday of the person, included if contact sync is enabled for the company
+    * The birthday of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'birthday'?: string;
     /**
-    * The job title of the person, included if contact sync is enabled for the company
+    * The job title of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'job_title'?: string;
diff --git a/src/versions/v2/models/update-person-request.ts b/src/versions/v2/models/update-person-request.ts
index 80ea5643..24dc17fa 100644
--- a/src/versions/v2/models/update-person-request.ts
+++ b/src/versions/v2/models/update-person-request.ts
@@ -73,22 +73,22 @@ export interface UpdatePersonRequest {
     */
     'postal_address'?: PersonItemAddress;
     /**
-    * Contact sync notes of the person, maximum 10 000 characters, included if contact sync is enabled for the company
+    * Contact sync notes of the person, maximum 10 000 characters. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'notes'?: string;
     /**
-    * The instant messaging accounts of the person, included if contact sync is enabled for the company
+    * The instant messaging accounts of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {Array<PersonItemIm>}
     */
     'im'?: Array<PersonItemIm>;
     /**
-    * The birthday of the person, included if contact sync is enabled for the company
+    * The birthday of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'birthday'?: string;
     /**
-    * The job title of the person, included if contact sync is enabled for the company
+    * The job title of the person. Only accepted when contact sync is enabled for the company; otherwise the request returns 403.
     * @type {string}
     */
     'job_title'?: string;