diff --git a/server/@types/adjustments/index.d.ts b/server/@types/adjustments/index.d.ts
index eadd4792..44a47cc6 100644
--- a/server/@types/adjustments/index.d.ts
+++ b/server/@types/adjustments/index.d.ts
@@ -91,7 +91,7 @@ export interface components {
   schemas: {
     DlqMessage: {
       body: {
-        [key: string]: Record<string, never>
+        [key: string]: Record<string, never> | undefined
       }
       messageId: string
     }
@@ -145,13 +145,8 @@ export interface components {
     }
     /** @description The details of an additional days awarded (ADA) adjustment */
     AdditionalDaysAwardedDto: {
-      /**
-       * Format: int32
-       * @description The id of the adjudication that resulted in the ADA
-       */
-      adjudicationId: number
-      /** @description Is the ADA consecutive or concurrent */
-      consecutive: boolean
+      /** @description The id of the adjudication that resulted in the ADA */
+      adjudicationId: number[]
     }
     /** @description The adjustment and its identifier */
     AdjustmentDto: {
@@ -213,8 +208,11 @@ export interface components {
       prisonName?: string
       /** @description The person last updating this adjustment */
       lastUpdatedBy?: string
-      /** @description The status of this adjustment */
-      status?: string
+      /**
+       * @description The status of this adjustment
+       * @enum {string}
+       */
+      status?: 'ACTIVE' | 'INACTIVE' | 'DELETED'
       /**
        * Format: date-time
        * @description The date and time this adjustment was last updated
@@ -277,8 +275,6 @@ export interface components {
   pathItems: never
 }
 
-export type $defs = Record<string, never>
-
 export type external = Record<string, never>
 
 export interface operations {
@@ -372,17 +368,11 @@ export interface operations {
     }
     responses: {
       /** @description Adjustment update */
-      200: {
-        content: never
-      }
+      200: never
       /** @description Unauthorised, requires a valid Oauth2 token */
-      401: {
-        content: never
-      }
+      401: never
       /** @description Adjustment not found */
-      404: {
-        content: never
-      }
+      404: never
     }
   }
   /**
@@ -398,17 +388,11 @@ export interface operations {
     }
     responses: {
       /** @description Adjustment deleted */
-      200: {
-        content: never
-      }
+      200: never
       /** @description Unauthorised, requires a valid Oauth2 token */
-      401: {
-        content: never
-      }
+      401: never
       /** @description Adjustment not found */
-      404: {
-        content: never
-      }
+      404: never
     }
   }
   /**
@@ -461,17 +445,11 @@ export interface operations {
     }
     responses: {
       /** @description Adjustment update */
-      200: {
-        content: never
-      }
+      200: never
       /** @description Unauthorised, requires a valid Oauth2 token */
-      401: {
-        content: never
-      }
+      401: never
       /** @description Adjustment not found */
-      404: {
-        content: never
-      }
+      404: never
     }
   }
   /**
@@ -487,17 +465,11 @@ export interface operations {
     }
     responses: {
       /** @description Adjustment deleted */
-      200: {
-        content: never
-      }
+      200: never
       /** @description Unauthorised, requires a valid Oauth2 token */
-      401: {
-        content: never
-      }
+      401: never
       /** @description Adjustment not found */
-      404: {
-        content: never
-      }
+      404: never
     }
   }
   /**
diff --git a/server/routes/additionalDaysAwardedRoutes.ts b/server/routes/additionalDaysAwardedRoutes.ts
index 2face138..9d5e62ff 100644
--- a/server/routes/additionalDaysAwardedRoutes.ts
+++ b/server/routes/additionalDaysAwardedRoutes.ts
@@ -31,4 +31,22 @@ export default class AdditionalDaysAwardedRoutes {
       adasToReview,
     })
   }
+
+  public approve: RequestHandler = async (req, res): Promise<void> => {
+    const { caseloads, token, username } = res.locals.user
+    const { nomsId } = req.params
+    const prisonerDetail = await this.prisonerService.getPrisonerDetail(nomsId, caseloads, token)
+    const startOfSentenceEnvelope = await this.prisonerService.getStartOfSentenceEnvelope(
+      prisonerDetail.bookingId,
+      token,
+    )
+    await this.additionalDaysAwardedService.approveAdjudications(
+      prisonerDetail,
+      startOfSentenceEnvelope,
+      username,
+      token,
+    )
+
+    return res.redirect(`/${nomsId}`)
+  }
 }
diff --git a/server/routes/adjustmentRoutes.test.ts b/server/routes/adjustmentRoutes.test.ts
index c19ffc1d..efe2f773 100644
--- a/server/routes/adjustmentRoutes.test.ts
+++ b/server/routes/adjustmentRoutes.test.ts
@@ -454,7 +454,7 @@ describe('Adjustment routes tests', () => {
   it('GET /{nomsId}/{adjustmentType}/view', () => {
     prisonerService.getPrisonerDetail.mockResolvedValue(stubbedPrisonerData)
     adjustmentsService.findByPerson.mockResolvedValue([
-      { ...radaAdjustment, id: 'this-is-an-id', lastUpdatedBy: 'Doris McNealy', status: 'Active', prisonName: 'Leeds' },
+      { ...radaAdjustment, id: 'this-is-an-id', lastUpdatedBy: 'Doris McNealy', status: 'ACTIVE', prisonName: 'Leeds' },
     ])
 
     return request(app)
diff --git a/server/routes/index.ts b/server/routes/index.ts
index 1d82ccad..4c67a732 100644
--- a/server/routes/index.ts
+++ b/server/routes/index.ts
@@ -37,6 +37,7 @@ export default function routes(service: Services): Router {
   post('/:nomsId/review', adjustmentRoutes.submitReview)
 
   get('/:nomsId/ada/review', additionalDaysAwardedRoutes.review)
+  post('/:nomsId/ada/review', additionalDaysAwardedRoutes.approve)
 
   get('/:nomsId/:adjustmentTypeUrl/view', adjustmentRoutes.view)
   get('/:nomsId/:adjustmentTypeUrl/remove/:id', adjustmentRoutes.remove)
diff --git a/server/services/additionalDaysAwardedService.test.ts b/server/services/additionalDaysAwardedService.test.ts
index 176d6aec..d5a280b1 100644
--- a/server/services/additionalDaysAwardedService.test.ts
+++ b/server/services/additionalDaysAwardedService.test.ts
@@ -88,15 +88,15 @@ const adjudicationThreeNonAda = JSON.parse(
 
 const adjudicationOneAdjustment = {
   adjustmentType: 'ADDITIONAL_DAYS_AWARDED',
-  additionalDaysAwarded: { adjudicationId: 1525916 },
+  additionalDaysAwarded: { adjudicationId: [1525916] },
 } as Adjustment
 const adjudicationTwoAdjustment = {
   adjustmentType: 'ADDITIONAL_DAYS_AWARDED',
-  additionalDaysAwarded: { adjudicationId: 1525917 },
+  additionalDaysAwarded: { adjudicationId: [1525917] },
 } as Adjustment
 const adjudicationThreeAdjustment = {
   adjustmentType: 'ADDITIONAL_DAYS_AWARDED',
-  additionalDaysAwarded: { adjudicationId: 1525918 },
+  additionalDaysAwarded: { adjudicationId: [1525918] },
 } as Adjustment
 
 const adjustmentResponsesWithChargeNumber = [
diff --git a/server/services/additionalDaysAwardedService.ts b/server/services/additionalDaysAwardedService.ts
index 53f00c35..aacfdc71 100644
--- a/server/services/additionalDaysAwardedService.ts
+++ b/server/services/additionalDaysAwardedService.ts
@@ -3,6 +3,8 @@ import { AdjudicationSearchResponse, IndividualAdjudication, Sanction } from '..
 import { HmppsAuthClient } from '../data'
 import { Ada, AdasByDateCharged, AdasToReview } from '../@types/AdaTypes'
 import AdjustmentsClient from '../api/adjustmentsClient'
+import { PrisonApiPrisoner } from '../@types/prisonApi/prisonClientTypes'
+import { Adjustment } from '../@types/adjustments/adjustmentsTypes'
 
 /* The adjudications status from NOMIS DB mapped to the adjudications API status are listed here temporarily to make it easier to implement the stories which use the NOMIS status
  * 'AS_AWARDED' = 'Activated as Awarded'
@@ -61,7 +63,7 @@ export default class AdditionalDaysAwardedService {
   ): Promise<AdasToReview> {
     const existingAdaChargeIds = (await new AdjustmentsClient(token).findByPerson(nomsId))
       .filter(it => it.adjustmentType === 'ADDITIONAL_DAYS_AWARDED' && it.additionalDaysAwarded)
-      .map(ada => ada.additionalDaysAwarded.adjudicationId)
+      .flatMap(ada => ada.additionalDaysAwarded.adjudicationId)
     const systemToken = await this.hmppsAuthClient.getSystemClientToken(username)
     const adjudicationClient = new AdjudicationClient(systemToken)
     const adjudications: AdjudicationSearchResponse = await adjudicationClient.getAdjudications(nomsId)
@@ -132,11 +134,13 @@ export default class AdditionalDaysAwardedService {
     const calculatedDays = chains
       .filter(it => it.length > 0)
       .map(chain => chain.reduce((acc, cur) => acc + cur.days, 0))
-
+    if (!calculatedDays.length) {
+      return 0
+    }
     return Math.max(...calculatedDays)
   }
 
-  createChain(ada: Ada, chain: Ada[], consecCharges: Ada[]) {
+  private createChain(ada: Ada, chain: Ada[], consecCharges: Ada[]) {
     const consecFrom = consecCharges.find(it => it.consecutiveToSequence === ada.sequence)
     if (consecFrom) {
       chain.push(consecFrom)
@@ -242,4 +246,58 @@ export default class AdditionalDaysAwardedService {
       )
       .map(consecutiveAda => allAdas.find(sourceAda => sourceAda.sequence === consecutiveAda.consecutiveToSequence))
   }
+
+  public async approveAdjudications(
+    prisonerDetail: PrisonApiPrisoner,
+    startOfSentenceEnvelope: Date,
+    username: string,
+    token: string,
+  ) {
+    const allAdaAdjustments = (await new AdjustmentsClient(token).findByPerson(prisonerDetail.offenderNo)).filter(
+      it => it.adjustmentType === 'ADDITIONAL_DAYS_AWARDED',
+    )
+    const existingAdaChargeIds = allAdaAdjustments
+      .filter(it => it.additionalDaysAwarded)
+      .flatMap(ada => ada.additionalDaysAwarded.adjudicationId)
+    const systemToken = await this.hmppsAuthClient.getSystemClientToken(username)
+    const adjudicationClient = new AdjudicationClient(systemToken)
+    const adjudications: AdjudicationSearchResponse = await adjudicationClient.getAdjudications(
+      prisonerDetail.offenderNo,
+    )
+    const individualAdjudications = await Promise.all(
+      adjudications.results.content.map(async it => {
+        return adjudicationClient.getAdjudication(prisonerDetail.offenderNo, it.adjudicationNumber)
+      }),
+    )
+    const allAdas: Ada[] = this.getAdas(individualAdjudications, startOfSentenceEnvelope, existingAdaChargeIds)
+
+    const adas: AdasByDateCharged[] = this.getAdasByDateCharged(allAdas, AWARDED)
+
+    const adjustments = adas.map(it => {
+      return {
+        person: prisonerDetail.offenderNo,
+        bookingId: prisonerDetail.bookingId,
+        adjustmentType: 'ADDITIONAL_DAYS_AWARDED',
+        fromDate: it.dateChargeProved.toISOString().substring(0, 10),
+        days: it.total,
+        prisonId: prisonerDetail.agencyId,
+        additionalDaysAwarded: { adjudicationId: it.charges.map(charge => charge.chargeNumber) },
+      } as Adjustment
+    })
+
+    // Delete all unlinked ADAs.
+    await Promise.all(
+      allAdaAdjustments
+        .filter(it => !it.additionalDaysAwarded)
+        .map(it => {
+          return new AdjustmentsClient(token).delete(it.id)
+        }),
+    )
+    // Create adjustments
+    await Promise.all(
+      adjustments.map(it => {
+        return new AdjustmentsClient(token).create(it)
+      }),
+    )
+  }
 }
diff --git a/server/views/pages/adjustments/ada/review.njk b/server/views/pages/adjustments/ada/review.njk
index d4cc4ef6..09e4917a 100644
--- a/server/views/pages/adjustments/ada/review.njk
+++ b/server/views/pages/adjustments/ada/review.njk
@@ -1,5 +1,6 @@
 {% extends "../../../partials/layout.njk" %}
 {% from "../../../macros/adaTable.njk" import adaTable %}
+{% from "govuk/components/button/macro.njk" import govukButton %}
 
 {% set pageTitle = applicationName + " - Review additional days awarded" %}
 {% set mainClasses = "app-container govuk-body" %}
@@ -24,7 +25,7 @@
             <h2 class="govuk-heading-m">Awarded ADAs</h2>
             {{ adaTable('awarded-adas', adasToReview.adas, adasToReview.totalAdas, 'Total ADAs taken into calculation', 'Awarded ADAs will be included in the calculation.', 'No active ADA adjudications exist for this offender') }}
 
-            {% if  adasToReview.suspended | length %}
+            {% if adasToReview.suspended | length %}
               <h2 class="govuk-heading-m">Suspended ADAs</h2>
               {{ adaTable('suspended-adas', adasToReview.suspended, adasToReview.totalSuspended, 'Total suspended ADAs', 'Suspended ADAs will not be included in the calculation.') }}
             {% endif %}
@@ -38,13 +39,19 @@
             If you think some information is wrong, contact the team responsible for adjudications.
           </div>
           <div class="govuk-!-margin-top-8 govuk-button-group">
-            <a href="#" class="govuk-button" data-module="govuk-button">
-              Approve
-            </a>
+
+            <form class="form" method="post">
+              <input type="hidden" name="_csrf" value="{{ csrfToken }}"/>
+              {{ govukButton({
+                text: "Approve",
+                type: submit,
+                preventDoubleClick: true
+              }) }}
+            </form>
           </div>
           <a href="../">Cancel and return to dashboard</a>
         </div>
       </div>
     </main>
   </div>
-{% endblock %}
+{% endblock %}
\ No newline at end of file