docs: adjust version upgrade details

docs/admin/Version Upgrade/portal-upgrade-details.md

@@ -1,11 +1,25 @@
 - [Summary](#summary)
+  - [v2.3.0](#v230)
+    - [Service Account renaming](#service-account-renaming)
+    - [BPDM Access Configuration adjustment](#bpdm-access-configuration-adjustment)
+    - [Offer Provider](#offer-provider)
+    - [Company Invitations](#company-invitations)
+  - [v2.2.0](#v220)
+    - [Add SelfDescription Creation Process](#add-selfdescription-creation-process)
+    - [Enhance Certificate Management](#enhance-certificate-management)
+  - [v2.1.0](#v210)
+    - [Removal of company credentials](#removal-of-company-credentials)
   - [v2.0.0](#v200)
     - [OnboardingServiceProvider - ENHANCED](#onboardingserviceprovider---enhanced)
     - [Postgres dependency of helm chart - ENHANCED](#postgres-dependency-of-helm-chart---enhanced)
   - [v1.8.0](#v180)
     - [Agreements - ENHANCED](#agreements---enhanced)
       - [Impact on existing data:](#impact-on-existing-data)
     - [Company Certificate Details - NEW](#company-certificate-details---new)
+      - [Company Certificate Database Structure](#company-certificate-database-structure)
+        - [Supported company_certificate_statuses:](#supported-company_certificate_statuses)
+        - [Supported company_certificate_type_statuses:](#supported-company_certificate_type_statuses)
+        - [Supported company_certificate_types:](#supported-company_certificate_types)
   - [v1.7.0](#v170)
     - [PostgreSQL - Upgrade](#postgresql---upgrade)
     - [Company Service Account - FIX](#company-service-account---fix)
@@ -35,6 +49,67 @@ Each section includes the respective change details, impact on existing data and
 
 > **_INFO:_** inside the detailed descriptions below, the definition 'migration script' refers to the term 'migrations' as it is defined by the ef-core framework: https://learn.microsoft.com/en-us/ef/core/managing-schemas/migrations
 
+### v2.3.0
+
+#### Service Account renaming
+
+All service account tables have been renamed to technical user. All changes are handled by the migration.
+The explicit changes can be found [here](https://github.com/eclipse-tractusx/portal-backend/blob/v2.3.0-RC3/CHANGELOG.md#230-rc1)
+
+#### BPDM Access Configuration adjustment
+
+Instead of configuring the BPDM Access directly on root level a section got introduced.
+
+**Old Configuration**
+
+```json
+    "BpnAccess": "https://example.org"
+```
+
+**New Configuration**
+
+```json
+  "BpnAccess": {
+     "BaseAddress": "https://example.org"
+  }
+```
+
+#### Offer Provider
+
+- REMOVED: table `offers` column `provider` was removed
+
+Instead of the column provider the link of the provider_company_id is used to get the name of the providing company.
+
+#### Company Invitations
+
+REMOVED: table `company_invitations` column `organisation_name` was removed
+ENHANCED: table `company_invitations` column `application_id` was made non nullable
+
+The organisation name was removed from the table, instead of the organisation name the name of the company is taken via the link of the company application
+
+### v2.2.0
+
+#### Add SelfDescription Creation Process
+
+- ENHANCED: table `companies` column `sd_creation_process_id` was added
+- ENHANCED: table `connectors` column `sd_creation_process_id` was added
+
+The columns `sd_creation_process_id` were added to the tables to link the newly introduced sd creation process to the company and connector.
+
+#### Enhance Certificate Management
+
+- ENHANCED: table `companies_certificate` columns `external_certificate_number`, `issuer`, `trust_level`, `validator` were added
+- ENHANCED: table `companies_certificate` column `valid_from` is now nullable
+- NEW: table `company_certificate_assigned_sites` added
+
+New table company_certificate_assigned_sites was added to assign certificates to bpns.
+
+### v2.1.0
+
+#### Removal of company credentials
+
+- REMOVED: tables `company_ssi_details`, `verified_credential_type_assigned_external_types`, `verified_credential_type_assigned_kinds`, `verified_credential_type_assigned_use_cases`, `company_ssi_detail_statuses`, `verified_credential_external_type_use_case_detail_versions`, `verified_credential_type_kinds`, `verified_credential_types`, `verified_credential_external_types` were removed from the portal database and moved to the [ssi-credential-issuer](https://github.com/eclipse-tractusx/ssi-credential-issuer)
+
 ### v2.0.0
 
 #### OnboardingServiceProvider - ENHANCED