diff --git a/packages/modules/promotion/integration-tests/__tests__/services/promotion-module/campaign.spec.ts b/packages/modules/promotion/integration-tests/__tests__/services/promotion-module/campaign.spec.ts
index 1c5ad7457b..f22c04f3da 100644
--- a/packages/modules/promotion/integration-tests/__tests__/services/promotion-module/campaign.spec.ts
+++ b/packages/modules/promotion/integration-tests/__tests__/services/promotion-module/campaign.spec.ts
@@ -1,9 +1,9 @@
 import { IPromotionModuleService } from "@medusajs/types"
+import { Modules } from "@medusajs/utils"
 import { moduleIntegrationTestRunner } from "medusa-test-utils"
 import { CampaignBudgetType } from "../../../../../../core/utils/src/promotion/index"
 import { createCampaigns } from "../../../__fixtures__/campaigns"
 import { createPromotions } from "../../../__fixtures__/promotion"
-import { Modules } from "@medusajs/utils"
 
 jest.setTimeout(30000)
 
@@ -170,6 +170,35 @@ moduleIntegrationTestRunner<IPromotionModuleService>({
             })
           )
         })
+
+        it("should create a campaign with a campaign identitifer of a deleted campaign", async () => {
+          const campaign = await service.createCampaigns({
+            name: "test",
+            campaign_identifier: "test",
+          })
+
+          await service.softDeleteCampaigns(campaign.id)
+
+          const recreatedCampaign = await service.createCampaigns({
+            name: "test",
+            campaign_identifier: "test",
+          })
+
+          expect(recreatedCampaign).toEqual(
+            expect.objectContaining({
+              name: "test",
+              campaign_identifier: "test",
+            })
+          )
+
+          const error = await service
+            .restoreCampaigns(campaign.id)
+            .catch((e) => e)
+
+          expect(error.message).toEqual(
+            "Promotion campaign with campaign_identifier: test, already exists."
+          )
+        })
       })
 
       describe("updateCampaigns", () => {
diff --git a/packages/modules/promotion/src/migrations/.snapshot-medusa-promotion.json b/packages/modules/promotion/src/migrations/.snapshot-medusa-promotion.json
index 6164ef4f7b..597f6c69d6 100644
--- a/packages/modules/promotion/src/migrations/.snapshot-medusa-promotion.json
+++ b/packages/modules/promotion/src/migrations/.snapshot-medusa-promotion.json
@@ -99,13 +99,14 @@
       "schema": "public",
       "indexes": [
         {
-          "keyName": "IDX_campaign_identifier_unique",
+          "keyName": "IDX_promotion_campaign_campaign_identifier_unique",
           "columnNames": [
             "campaign_identifier"
           ],
           "composite": false,
           "primary": false,
-          "unique": true
+          "unique": false,
+          "expression": "CREATE UNIQUE INDEX IF NOT EXISTS \"IDX_promotion_campaign_campaign_identifier_unique\" ON \"promotion_campaign\" (campaign_identifier) WHERE deleted_at IS NULL"
         },
         {
           "keyName": "promotion_campaign_pkey",
diff --git a/packages/modules/promotion/src/migrations/Migration20240624153824.ts b/packages/modules/promotion/src/migrations/Migration20240624153824.ts
new file mode 100644
index 0000000000..9b858e2e3f
--- /dev/null
+++ b/packages/modules/promotion/src/migrations/Migration20240624153824.ts
@@ -0,0 +1,21 @@
+import { Migration } from "@mikro-orm/migrations"
+
+export class Migration20240624153824 extends Migration {
+  async up(): Promise<void> {
+    this.addSql(
+      'alter table if exists "promotion_campaign" drop constraint if exists "IDX_campaign_identifier_unique";'
+    )
+    this.addSql(
+      'CREATE UNIQUE INDEX IF NOT EXISTS "IDX_promotion_campaign_campaign_identifier_unique" ON "promotion_campaign" (campaign_identifier) WHERE deleted_at IS NULL;'
+    )
+  }
+
+  async down(): Promise<void> {
+    this.addSql(
+      'drop index if exists "IDX_promotion_campaign_campaign_identifier_unique";'
+    )
+    this.addSql(
+      'alter table if exists "promotion_campaign" add constraint "IDX_campaign_identifier_unique" unique ("campaign_identifier");'
+    )
+  }
+}
diff --git a/packages/modules/promotion/src/models/campaign.ts b/packages/modules/promotion/src/models/campaign.ts
index b4cf9ed5cb..b8d4f0c3e2 100644
--- a/packages/modules/promotion/src/models/campaign.ts
+++ b/packages/modules/promotion/src/models/campaign.ts
@@ -1,5 +1,10 @@
 import { DAL } from "@medusajs/types"
-import { DALUtils, Searchable, generateEntityId } from "@medusajs/utils"
+import {
+  DALUtils,
+  Searchable,
+  createPsqlIndexStatementHelper,
+  generateEntityId,
+} from "@medusajs/utils"
 import {
   BeforeCreate,
   Collection,
@@ -12,7 +17,6 @@ import {
   PrimaryKey,
   Property,
   Rel,
-  Unique,
 } from "@mikro-orm/core"
 import CampaignBudget from "./campaign-budget"
 import Promotion from "./promotion"
@@ -24,7 +28,15 @@ type OptionalFields =
   | "ends_at"
   | DAL.SoftDeletableEntityDateColumns
 
-@Entity({ tableName: "promotion_campaign" })
+const tableName = "promotion_campaign"
+const CampaignUniqueCampaignIdentifier = createPsqlIndexStatementHelper({
+  tableName,
+  columns: ["campaign_identifier"],
+  unique: true,
+  where: "deleted_at IS NULL",
+})
+
+@Entity({ tableName })
 @Filter(DALUtils.mikroOrmSoftDeletableFilterOptions)
 export default class Campaign {
   [OptionalProps]?: OptionalFields | OptionalRelations
@@ -41,10 +53,7 @@ export default class Campaign {
   description: string | null = null
 
   @Property({ columnType: "text" })
-  @Unique({
-    name: "IDX_campaign_identifier_unique",
-    properties: ["campaign_identifier"],
-  })
+  @CampaignUniqueCampaignIdentifier.MikroORMIndex()
   campaign_identifier: string
 
   @Property({