diff --git a/frontend/cypress/fixtures/business.json b/frontend/cypress/fixtures/business.json
index bf8e986dcc..c6158f2319 100644
--- a/frontend/cypress/fixtures/business.json
+++ b/frontend/cypress/fixtures/business.json
@@ -40,5 +40,17 @@
     "name": "Totally Shady Company",
     "status": "ACTIVE",
     "legalType": "SP"
+  },
+  {
+    "code":"BC1234567",
+    "name":"Unsupported Client Type Inc.",
+    "status":"ACTIVE",
+    "legalType": "BC"
+  },
+  {
+    "code":"SP1234567",
+    "name":"Unknown Sole Proprietor Ltd.",
+    "status":"ACTIVE",
+    "legalType": "SP"
   }
 ]
diff --git a/frontend/tests/pages/bceid/BusinessInformationWizardStep.cy.ts b/frontend/tests/pages/bceid/BusinessInformationWizardStep.cy.ts
index d3d94d0407..5945cbd704 100644
--- a/frontend/tests/pages/bceid/BusinessInformationWizardStep.cy.ts
+++ b/frontend/tests/pages/bceid/BusinessInformationWizardStep.cy.ts
@@ -2,7 +2,31 @@ import BusinessInformationWizardStep from "@/pages/bceidform/BusinessInformation
 import type { FormDataDto } from "@/dto/ApplyClientNumberDto";
 
 describe('<BusinessInformationWizardStep />', () => {
-  
+
+  beforeEach(() => {
+    cy.intercept("/api/clients/name/*", {
+      fixture: "business.json",
+    }).as("searchCompany");
+
+    cy.intercept("GET", "/api/clients/BC1234567", {
+      statusCode: 406,
+      body: "Client type BC is not supported at the moment",
+    });
+
+    cy.intercept("GET", "/api/clients/SP1234567", {
+      statusCode: 422,
+      body: "Unable to process request. This sole proprietor is not owner by a person",
+    });
+
+    cy.intercept("GET", "/api/clients/getClientTypeByCode/C", {
+      statusCode: 200,
+      body: {
+        code: "C",
+        name: "Corporation",
+      },
+    }).as("getClientType");
+  });
+
   it('renders the BusinessInformationWizardStep component and interacts with elements', () => {
     cy.mount(BusinessInformationWizardStep, {
       props: {
@@ -28,4 +52,97 @@ describe('<BusinessInformationWizardStep />', () => {
     cy.get('.link-button:visible span').should('exist');
     cy.get('.link-button:visible span').invoke('text').should('not.be.empty');
   });
+
+  it('shows "Client type not supported"', () => {
+    cy.mount(BusinessInformationWizardStep, {
+      props: {
+        data: {
+          businessInformation: {
+            businessType: "",
+            legalType: "",
+            clientType: "",
+            incorporationNumber: "",
+            businessName: "",
+            goodStandingInd: "",
+            birthdate: "",
+            address: ""
+          },
+          location: {
+            contacts: [
+              {
+                email: "john@doe.com",
+                firstName: "John",
+              },
+            ],
+          },
+        } as unknown as FormDataDto,
+        active: false,
+      },
+    });
+
+    cy.get("#businessTyperbR").click();
+
+    cy.get("#business")
+      .should("be.visible")
+      .shadow()
+      .find("input")
+      .should("have.value", "")
+      .type("Unsupported");
+    cy.wait("@searchCompany");
+
+    cy.get('cds-combo-box-item[data-id="BC1234567"]').click();
+
+    cy.get("cds-inline-notification")
+      .shadow()
+      .contains("Client type not supported")
+      .should("be.visible");
+
+    // The name of the client type
+    cy.contains("cds-inline-notification", "Corporation").should("be.visible");
+  });
+
+  it('shows "Unknown sole proprietor"', () => {
+    cy.mount(BusinessInformationWizardStep, {
+      props: {
+        data: {
+          businessInformation: {
+            businessType: "",
+            legalType: "",
+            clientType: "",
+            incorporationNumber: "",
+            businessName: "",
+            goodStandingInd: "",
+            birthdate: "",
+            address: ""
+          },
+          location: {
+            contacts: [
+              {
+                email: "john@doe.com",
+                firstName: "John",
+              },
+            ],
+          },
+        } as unknown as FormDataDto,
+        active: false,
+      },
+    });
+
+    cy.get("#businessTyperbR").click();
+
+    cy.get("#business")
+      .should("be.visible")
+      .shadow()
+      .find("input")
+      .should("have.value", "")
+      .type("Unknown");
+    cy.wait("@searchCompany");
+
+    cy.get('cds-combo-box-item[data-id="SP1234567"]').click();
+
+    cy.get("cds-inline-notification")
+      .shadow()
+      .contains("Unknown sole proprietor")
+      .should("be.visible");
+  });
 });