diff --git a/db/migrations/1735226891776-AddNo Affiliation.js b/db/migrations/1735226891776-AddNo Affiliation.js
new file mode 100644
index 0000000..2df9803
--- /dev/null
+++ b/db/migrations/1735226891776-AddNo Affiliation.js	
@@ -0,0 +1,28 @@
+const ethers = require("ethers");
+const easSdk = require("@ethereum-attestation-service/eas-sdk");
+
+const ZERO_UID = easSdk.ZERO_BYTES32;
+module.exports = class AddNoAffiliation1735226891776 {
+  name = "AddNoAffiliation1735226891776";
+
+  async up(db) {
+    // Add organisation with name "No Affiliation"
+    await db.query(
+      `INSERT INTO "organisation" ("id", "name", "issuer", "color", "start_block") 
+        VALUES (
+          '${ZERO_UID}',
+          'No Affiliation',
+          '${ethers.ZeroAddress}',
+          '#0049b7',
+          null
+        )`
+    );
+  }
+
+  async down(db) {
+    // Remove organisation with name "No Affiliation"
+    await db.query(
+      `DELETE FROM "organisation" WHERE "id" = '${ZERO_UID}'`
+    );
+  }
+};
diff --git a/src/constants.ts b/src/constants.ts
index 664cf61..b01a53c 100644
--- a/src/constants.ts
+++ b/src/constants.ts
@@ -1,5 +1,5 @@
+import { ZERO_BYTES32 } from "@ethereum-attestation-service/eas-sdk";
 import { assertNotNull } from "@subsquid/evm-processor";
-import { map } from "zod";
 
 const SQUID_NETWORK = process.env.SQUID_NETWORK || "eth-sepolia";
 
@@ -39,3 +39,5 @@ export const DESCRIPTION_SUMMARY_LENGTH = Number(
 );
 
 export const AGORA_API_KEY = process.env.AGORA_API_KEY;
+
+export const ZERO_UID = ZERO_BYTES32;
diff --git a/src/controllers/projectVerificationAttestation.ts b/src/controllers/projectVerificationAttestation.ts
index 631a56a..29f44c0 100644
--- a/src/controllers/projectVerificationAttestation.ts
+++ b/src/controllers/projectVerificationAttestation.ts
@@ -7,6 +7,8 @@ import {
 } from "./utils/easHelper";
 import { AttestorOrganisation, ProjectAttestation } from "../model";
 import {
+  getAttestor,
+  getOrCreateAttestorOrganisation,
   getProject,
   updateProjectAttestationCounts,
 } from "./utils/modelHelper";
@@ -30,15 +32,14 @@ export const handleProjectAttestation = async (
     schemaUid
   );
 
-  const attestorOrganisation = await ctx.store.get(AttestorOrganisation, {
-    where: {
-      id: refUID.toLowerCase(),
-    },
-    relations: {
-      organisation: true,
-      attestor: true,
-    },
-  });
+  const attestor = await getAttestor(ctx, issuer);
+
+  const attestorOrganisation = await getOrCreateAttestorOrganisation(
+    ctx,
+    attestor,
+    refUID,
+    new Date(log.block.timestamp)
+  );
 
   if (!attestorOrganisation) {
     ctx.log.debug(
diff --git a/src/controllers/utils/modelHelper.ts b/src/controllers/utils/modelHelper.ts
index ce26bd0..768b33d 100644
--- a/src/controllers/utils/modelHelper.ts
+++ b/src/controllers/utils/modelHelper.ts
@@ -2,12 +2,14 @@ import { DataHandlerContext } from "@subsquid/evm-processor";
 import { Store } from "@subsquid/typeorm-store";
 import {
   Attestor,
+  AttestorOrganisation,
   Organisation,
   OrganisationProject,
   Project,
 } from "../../model";
 import { getEntityMangerByContext } from "./databaseHelper";
 import { ProjectStats } from "./types";
+import { ZERO_UID } from "../../constants";
 
 export const upsertOrganisatoinProject = async (
   ctx: DataHandlerContext<Store>,
@@ -182,3 +184,52 @@ export const getProjectStats = async (
 
   return ProjectStats.parse(result[0]);
 };
+
+export const getOrCreateAttestorOrganisation = async (
+  ctx: DataHandlerContext<Store>,
+  attestor: Attestor,
+  refUID?: string,
+  attestTimestamp?: Date
+): Promise<AttestorOrganisation | undefined> => {
+  // Check if refUID is valid and not a placeholder for an empty reference
+  if (refUID && refUID !== ZERO_UID) {
+    // Attempt to find existing AttestorOrganisation
+    const attestorOrganisation = await ctx.store.get(AttestorOrganisation, {
+      where: { id: refUID.toLowerCase() },
+      relations: { organisation: true, attestor: true },
+    });
+
+    if (attestorOrganisation) {
+      ctx.log.debug(
+        `Found existing attestorOrganisation: ${attestorOrganisation}`
+      );
+      return attestorOrganisation;
+    }
+  }
+
+  // Attempt to retrieve default organisation
+  let organisation = await ctx.store.get(Organisation, ZERO_UID);
+
+  if (!organisation) {
+    ctx.log.error("No Affiliation organisation not found");
+    return undefined;
+  }
+
+  // Ensure timestamp is set
+  const timestamp = attestTimestamp || new Date();
+
+  // Generate unique key
+  const key = `NO_AFFILIATION${attestor.id}`;
+
+  const newAttestorOrganisation = new AttestorOrganisation({
+    id: key,
+    attestor,
+    organisation,
+    attestTimestamp: timestamp,
+  });
+
+  await ctx.store.upsert(newAttestorOrganisation);
+  ctx.log.debug(`Created new attestorOrganisation: ${newAttestorOrganisation}`);
+
+  return newAttestorOrganisation;
+};
diff --git a/src/controllers/utils/types.test.ts b/src/controllers/utils/types.test.ts
index 24b8c28..f54a267 100644
--- a/src/controllers/utils/types.test.ts
+++ b/src/controllers/utils/types.test.ts
@@ -1,6 +1,6 @@
 import { orgCountTuplesTypes } from "./types";
 
-describe.only("parse database query", () => {
+describe("parse database query", () => {
   it("should parse project stats query", () => {
     const raw = `{"(0x2e22df9a11e06c306ed8f64ca45ceae02efcf8a443371395a78371bc4fb6f722,1)","(0xf63f2a7159ee674aa6fce42196a8bb0605eafcf20c19e91a7eafba8d39fa0404,1)"}`;
 
diff --git a/src/test/store.test.ts b/src/test/store.test.ts
index 4d4ac09..194363f 100644
--- a/src/test/store.test.ts
+++ b/src/test/store.test.ts
@@ -1,13 +1,17 @@
 import { describe, expect, test, afterAll } from "@jest/globals";
-import { closeConnection, getTestCtx } from "./utils";
+import { closeConnection, getTestCtx, getTestEntityManager } from "./utils";
 import { Organisation } from "../model";
 
 describe("simple storage", () => {
+  beforeAll(async () => {
+    const em = await getTestEntityManager();
+    await em.getRepository(Organisation).delete({});
+  });
   afterAll(async () => {
     await closeConnection();
   });
 
-  test("sample authorized attest", async () => {
+  test("should save sample authorized attest", async () => {
     const ctx = await getTestCtx();
     const organization = new Organisation({
       id: "schemaUid",
@@ -24,4 +28,23 @@ describe("simple storage", () => {
     expect(fetchOrganization).toBeDefined();
     expect(fetchOrganization?.name).toBe("name");
   });
+
+  test("should not fail on upserting the same entity", async () => {
+    const ctx = await getTestCtx();
+    const organization = new Organisation({
+      id: "schemaUid",
+      name: "name",
+      issuer: "issuer",
+    });
+
+    await ctx.store.upsert(organization);
+    await ctx.store.upsert(organization);
+
+    const fetchOrganization = await ctx.store.findOneBy(Organisation, {
+      name: "name",
+    });
+
+    expect(fetchOrganization).toBeDefined();
+    expect(fetchOrganization?.name).toBe("name");
+  });
 });