diff --git a/packages/backend/src/adapters/intl/odoo-jsonrpc.json b/packages/backend/src/adapters/intl/odoo-jsonrpc.json
index f53847eea..9166dcf96 100644
--- a/packages/backend/src/adapters/intl/odoo-jsonrpc.json
+++ b/packages/backend/src/adapters/intl/odoo-jsonrpc.json
@@ -244,7 +244,7 @@
           },
           "domain": {
             "type": "array",
-            "description": "Extra Odoo domain, e.g. [[\"customer_rank\",\">\",0]] for customers only.",
+            "description": "Extra Odoo domain, e.g. [[\"customer_rank\",\">\",0]] for customers only. customer_rank and supplier_rank exist only when the Invoicing app is installed; without it that domain fails with Invalid field.",
             "items": {
               "type": "array"
             },
@@ -255,7 +255,7 @@
       "endpointMapping": {
         "method": "POST",
         "path": "/jsonrpc",
-        "bodyTemplate": "{\"jsonrpc\":\"2.0\",\"method\":\"call\",\"id\":1,\"params\":{\"service\":\"object\",\"method\":\"execute_kw\",\"args\":[\"{{ODOO_DB}}\",{{ODOO_UID}},\"{{ODOO_API_KEY}}\",\"res.partner\",\"search_read\",[${domain}],{\"fields\":[\"id\", \"name\", \"email\", \"phone\", \"city\", \"country_id\", \"customer_rank\", \"supplier_rank\", \"vat\"],\"limit\":${limit},\"offset\":${offset},\"order\":\"name asc\"}]}}"
+        "bodyTemplate": "{\"jsonrpc\":\"2.0\",\"method\":\"call\",\"id\":1,\"params\":{\"service\":\"object\",\"method\":\"execute_kw\",\"args\":[\"{{ODOO_DB}}\",{{ODOO_UID}},\"{{ODOO_API_KEY}}\",\"res.partner\",\"search_read\",[${domain}],{\"fields\":[\"id\", \"name\", \"email\", \"phone\", \"city\", \"country_id\", \"vat\"],\"limit\":${limit},\"offset\":${offset},\"order\":\"name asc\"}]}}"
       },
       "annotations": {
         "readOnlyHint": true
diff --git a/packages/backend/src/adapters/intl/odoo-jsonrpc.live.spec.ts b/packages/backend/src/adapters/intl/odoo-jsonrpc.live.spec.ts
index f3e5c6cd7..98970a44b 100644
--- a/packages/backend/src/adapters/intl/odoo-jsonrpc.live.spec.ts
+++ b/packages/backend/src/adapters/intl/odoo-jsonrpc.live.spec.ts
@@ -39,4 +39,10 @@ describe('odoo-jsonrpc adapter: static spec conformance', () => {
   it('checks the connection on a path every Odoo version serves', () => {
     expect(a.connector.healthcheckPath).toBe('/web/health');
   });
+
+  it('reads partners with fields every Odoo has, since the setup check calls this tool', () => {
+    const partners = a.tools.find((t) => t.name === 'odoo_list_partners');
+    // customer_rank / supplier_rank come with the Invoicing app only.
+    expect(partners?.endpointMapping.bodyTemplate).not.toMatch(/customer_rank|supplier_rank/);
+  });
 });
diff --git a/packages/backend/src/adapters/intl/odoo.json b/packages/backend/src/adapters/intl/odoo.json
index 94662eb83..abac3db8d 100644
--- a/packages/backend/src/adapters/intl/odoo.json
+++ b/packages/backend/src/adapters/intl/odoo.json
@@ -226,7 +226,7 @@
           },
           "domain": {
             "type": "array",
-            "description": "Extra Odoo domain, e.g. [[\"customer_rank\",\">\",0]] for customers only.",
+            "description": "Extra Odoo domain, e.g. [[\"customer_rank\",\">\",0]] for customers only. customer_rank and supplier_rank exist only when the Invoicing app is installed; without it that domain fails with Invalid field.",
             "items": {
               "type": "array"
             }
@@ -245,8 +245,6 @@
             "phone",
             "city",
             "country_id",
-            "customer_rank",
-            "supplier_rank",
             "vat"
           ],
           "limit": "$limit",
diff --git a/packages/backend/src/adapters/intl/odoo.live.spec.ts b/packages/backend/src/adapters/intl/odoo.live.spec.ts
index 8fc80abc7..06d82201b 100644
--- a/packages/backend/src/adapters/intl/odoo.live.spec.ts
+++ b/packages/backend/src/adapters/intl/odoo.live.spec.ts
@@ -54,6 +54,9 @@ describe('odoo adapter — static spec conformance', () => {
     // The partner wrapper's fixed field list must work on Odoo 19 as shipped.
     const partners = tools.find((t) => t.name === 'odoo_list_partners');
     expect(JSON.stringify(partners?.endpointMapping)).not.toContain('"mobile"');
+    // customer_rank / supplier_rank come with the Invoicing app: an Odoo
+    // without it answers the setup check (this tool) with Invalid field.
+    expect(JSON.stringify(partners?.endpointMapping)).not.toMatch(/customer_rank|supplier_rank/);
   });
 
   it("tells call_method to pass required arguments by name and one id for singleton actions", () => {