diff --git a/README.md b/README.md
index 32c8a11..230a731 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ https://check-in.fci.coop/?cid=<contactId>&cs=<checksum>
 The app:
 
 1. Verifies the checksum against CiviCRM.
-2. Resolves the org from the contact's **Primary Form Contact** relationship.
+2. Resolves the org from the contact's **Primary Contact** relationship (Individual → Organization). Configurable via `FORM_CONTACT_RELATIONSHIP` in `config/form.ts`.
 3. Reads the org's **Framework Stage** (`Food_Co_op_Organizing.Stage`) — text-keyed values like `Inquiry`, `Organizing`, `Feasibility`, `Business feasibility`, `Store Implementation`, `Stabilize newly opened co-op`.
 4. Walks the org's past `Org Engagement Submission` activities DESC and assembles per-field-most-recent prefill values (the exact behaviour the WCM admin UI cannot express).
 5. Renders the form with stage-conditional sections — Stage 0 (Inquiry / core check-in fields, ~32 of them) is always visible; Stages 1–5 each appear when `current_stage` is in their visibility set.
diff --git a/app/api/data/route.ts b/app/api/data/route.ts
index e8699e1..80cf00d 100644
--- a/app/api/data/route.ts
+++ b/app/api/data/route.ts
@@ -2,7 +2,7 @@
  * GET /api/data?cid=<cid>&cs=<cs>
  *
  * Verifies the checksum, resolves the org from the contact via the
- * Primary Form Contact relationship, reads the org's Framework Stage
+ * Primary Contact relationship, reads the org's Framework Stage
  * (`Food_Co_op_Organizing.Stage` on the Organization contact), and walks
  * past `Check-in (organizing)` activities for per-field most-recent prefill.
  *
@@ -19,7 +19,7 @@
 import { NextRequest, NextResponse } from "next/server";
 import { civi, verifyChecksum } from "@/lib/civicrm";
 import { loadPrefill } from "@/lib/prefill";
-import { allFields, optionGroupIds, ACTIVITY_TYPE_NAME } from "@/config/form";
+import { allFields, optionGroupIds, ACTIVITY_TYPE_NAME, FORM_CONTACT_RELATIONSHIP } from "@/config/form";
 import type { FormDataPayload, SelectOption } from "@/types/form";
 
 const STUB_PAYLOAD: FormDataPayload = {
@@ -118,13 +118,13 @@ export async function GET(req: NextRequest) {
     );
   }
 
-  // Resolve the org from the contact's Primary Form Contact relationship.
+  // Resolve the org from the contact's "Primary Contact" relationship.
   // The relationship is Individual (A) → Organization (B); fetch contact_id_b.
   const relRes = await civi<{ contact_id_b: number }>("Relationship", "get", {
     select: ["contact_id_b"],
     where: [
       ["contact_id_a", "=", Number(cid)],
-      ["relationship_type_id:name", "=", "Primary Form Contact of"],
+      ["relationship_type_id:name_a_b", "=", FORM_CONTACT_RELATIONSHIP],
       ["is_active", "=", true],
     ],
     limit: 2,
@@ -132,13 +132,13 @@ export async function GET(req: NextRequest) {
   const orgs = relRes.values ?? [];
   if (orgs.length === 0) {
     return NextResponse.json(
-      { error: "No active Primary Form Contact relationship found for your contact." },
+      { error: `No active "${FORM_CONTACT_RELATIONSHIP}" relationship found for your contact.` },
       { status: 404 },
     );
   }
   if (orgs.length > 1) {
     return NextResponse.json(
-      { error: "Your contact has multiple active Primary Form Contact relationships; staff must resolve before this link will work." },
+      { error: `Your contact has multiple active "${FORM_CONTACT_RELATIONSHIP}" relationships; staff must resolve before this link will work.` },
       { status: 409 },
     );
   }
diff --git a/app/api/health/route.ts b/app/api/health/route.ts
index 76f32ab..2b6a9dd 100644
--- a/app/api/health/route.ts
+++ b/app/api/health/route.ts
@@ -20,7 +20,7 @@
 
 import { NextResponse } from "next/server";
 import { civi, verifyChecksum } from "@/lib/civicrm";
-import { ACTIVITY_TYPE_NAME } from "@/config/form";
+import { ACTIVITY_TYPE_NAME, FORM_CONTACT_RELATIONSHIP } from "@/config/form";
 
 interface CheckResult {
   check: string;
@@ -114,59 +114,40 @@ async function probeContactGet(): Promise<CheckResult> {
 
 async function probeRelationshipType(): Promise<CheckResult> {
   try {
-    const exact = await civi<{ id: number; name_a_b: string; name_b_a: string; label_a_b: string }>(
-      "RelationshipType",
-      "get",
-      {
-        select: ["id", "name_a_b", "name_b_a", "label_a_b"],
-        where: [["name_a_b", "=", "Primary Form Contact of"]],
-      },
-    );
-    if ((exact.values ?? []).length === 1) {
-      const r = exact.values[0];
+    const exact = await civi<{
+      id: number;
+      name_a_b: string;
+      name_b_a: string;
+      label_a_b: string;
+      contact_type_a: string;
+      contact_type_b: string;
+    }>("RelationshipType", "get", {
+      select: ["id", "name_a_b", "name_b_a", "label_a_b", "contact_type_a", "contact_type_b"],
+      where: [["name_a_b", "=", FORM_CONTACT_RELATIONSHIP]],
+    });
+    const rows = exact.values ?? [];
+    if (rows.length === 1) {
+      const r = rows[0];
+      const directionOk = r.contact_type_a === "Individual" && r.contact_type_b === "Organization";
       return {
-        check: "relationship_type_primary_form_contact_of",
-        ok: true,
-        detail: `Found id=${r.id}, name_a_b="${r.name_a_b}", name_b_a="${r.name_b_a}".`,
+        check: `relationship_type_${FORM_CONTACT_RELATIONSHIP.replace(/\W+/g, "_").toLowerCase()}`,
+        ok: directionOk,
+        detail: directionOk
+          ? `Found id=${r.id}, name_a_b="${r.name_a_b}", direction Individual → Organization. ✓`
+          : `Found id=${r.id} but direction is ${r.contact_type_a} → ${r.contact_type_b} (expected Individual → Organization).`,
       };
     }
-
-    // Not found by exact name — list close matches so we know what's available.
-    const candidates = await civi<{ id: number; name_a_b: string; label_a_b: string; contact_type_a: string; contact_type_b: string }>(
-      "RelationshipType",
-      "get",
-      {
-        select: ["id", "name_a_b", "label_a_b", "contact_type_a", "contact_type_b"],
-        where: [
-          [
-            "OR",
-            [
-              ["name_a_b", "LIKE", "%Form%"],
-              ["name_a_b", "LIKE", "%Primary%"],
-              ["name_a_b", "LIKE", "%Contact%"],
-              ["label_a_b", "LIKE", "%Form%"],
-              ["label_a_b", "LIKE", "%Primary%"],
-            ],
-          ],
-        ],
-        limit: 25,
-      },
-    );
-    const closeMatches = (candidates.values ?? [])
-      .map((r) => `  • id=${r.id} name_a_b="${r.name_a_b}" label="${r.label_a_b}" (${r.contact_type_a} ↔ ${r.contact_type_b})`)
-      .join("\n");
     return {
-      check: "relationship_type_primary_form_contact_of",
+      check: `relationship_type_${FORM_CONTACT_RELATIONSHIP.replace(/\W+/g, "_").toLowerCase()}`,
       ok: false,
       detail:
-        "No relationship type with name_a_b='Primary Form Contact of' on this site.\n" +
-        "Existing relationship types matching Form/Primary/Contact:\n" +
-        (closeMatches || "  (none)") +
-        "\nFix: create a new RelationshipType (Individual A ↔ Organization B) with name_a_b='Primary Form Contact of', or change the expected name in /api/data and /api/submit to match an existing type.",
+        rows.length === 0
+          ? `No relationship type with name_a_b="${FORM_CONTACT_RELATIONSHIP}" found.`
+          : `Multiple relationship types named "${FORM_CONTACT_RELATIONSHIP}" (${rows.length}). Should be exactly one.`,
     };
   } catch (e) {
     return {
-      check: "relationship_type_primary_form_contact_of",
+      check: `relationship_type_${FORM_CONTACT_RELATIONSHIP.replace(/\W+/g, "_").toLowerCase()}`,
       ok: false,
       detail: e instanceof Error ? e.message : String(e),
     };
diff --git a/app/api/submit/route.ts b/app/api/submit/route.ts
index 7d101e0..8b5d347 100644
--- a/app/api/submit/route.ts
+++ b/app/api/submit/route.ts
@@ -14,7 +14,7 @@
 
 import { NextResponse } from "next/server";
 import { civi, verifyChecksum } from "@/lib/civicrm";
-import { allFields, ACTIVITY_TYPE_NAME, ACTIVITY_STAGE_FIELD } from "@/config/form";
+import { allFields, ACTIVITY_TYPE_NAME, ACTIVITY_STAGE_FIELD, FORM_CONTACT_RELATIONSHIP } from "@/config/form";
 import type { SubmitPayload } from "@/types/form";
 
 function isStubMode(): boolean {
@@ -54,7 +54,7 @@ export async function POST(req: Request) {
     select: ["contact_id_b"],
     where: [
       ["contact_id_a", "=", Number(cid)],
-      ["relationship_type_id:name", "=", "Primary Form Contact of"],
+      ["relationship_type_id:name_a_b", "=", FORM_CONTACT_RELATIONSHIP],
       ["is_active", "=", true],
     ],
     limit: 2,
diff --git a/config/form.ts b/config/form.ts
index 762e253..731e423 100644
--- a/config/form.ts
+++ b/config/form.ts
@@ -537,6 +537,17 @@ export const ACTIVITY_TYPE_NAME = "Check-in (organizing)";
 /** Stage-snapshot field on the activity (so the form's stage_at_submission writes here). */
 export const ACTIVITY_STAGE_FIELD = `${G0}.Stage`;
 
+/**
+ * RelationshipType.name_a_b for the relationship that links the form-filler
+ * (Individual side) to the organization the form is about (Organization side).
+ *
+ * On `client.crm.fci.coop` we reuse the existing "Primary Contact"
+ * relationship type (id 24) rather than introducing a dedicated
+ * "Primary Form Contact" type. If you change this, also update the docs in
+ * the parent repo's spec.
+ */
+export const FORM_CONTACT_RELATIONSHIP = "Primary Contact";
+
 /** All distinct option_group_ids referenced by fields in this form. */
 export const optionGroupIds = Array.from(
   new Set(