diff --git a/src/adclaw/app/routers/envs.py b/src/adclaw/app/routers/envs.py
index 3453537..45378ec 100644
--- a/src/adclaw/app/routers/envs.py
+++ b/src/adclaw/app/routers/envs.py
@@ -226,6 +226,11 @@ _KEY_REGISTRY: List[Dict[str, str]] = [
     # Advertising
     {"key": "GOOGLE_ADS_DEVELOPER_TOKEN", "plugin": "Google Ads", "description": "Google Ads API developer token"},
     {"key": "META_ADS_ACCESS_TOKEN", "plugin": "Meta Ads", "description": "Facebook & Instagram ads access token"},
+    # Both of these block a campaign launch, and the Campaigns setup panel
+    # tells the operator to set them here — so they have to be listed here,
+    # or that instruction points at a page where the field is not offered.
+    {"key": "META_ADS_ACCOUNT_ID", "plugin": "Meta Ads", "description": "Ad account campaigns are created in, like act_1234567890"},
+    {"key": "META_PAGE_ID", "plugin": "Meta Ads", "description": "Facebook Page ads are published from; sync refuses without it"},
     {"key": "META_APP_ID", "plugin": "Meta Ads", "description": "Meta app ID, enables automatic token refresh"},
     {"key": "META_APP_SECRET", "plugin": "Meta Ads", "description": "Meta app secret, enables automatic token refresh"},
     {"key": "MASKANX_OPERATOR_TOKENS", "plugin": "Campaigns", "description": "Comma-separated name:token pairs authorised to approve and launch campaigns"},
diff --git a/tests/test_campaign_diagnostics.py b/tests/test_campaign_diagnostics.py
index 47302b7..ba91493 100644
--- a/tests/test_campaign_diagnostics.py
+++ b/tests/test_campaign_diagnostics.py
@@ -330,3 +330,35 @@ def test_smoke_test_refuses_when_no_ad_account_is_configured(
 
     assert response.status_code == 422
     assert "META_ADS_ACCOUNT_ID" in response.json()["detail"]
+
+
+# --- the remedies have to point somewhere real ---
+
+
+def test_every_env_var_a_remedy_names_is_offered_in_settings():
+    """A remedy saying "set X in Settings > Environments" is a lie if X is
+    not in the key registry the Settings page renders.
+
+    Arbitrary keys can be stored, but only registry entries are shown, so
+    an unlisted key leaves the operator with an instruction and no field.
+    """
+    import re
+
+    from adclaw.app.routers.envs import _KEY_REGISTRY
+    from adclaw.campaigns import diagnostics
+
+    listed = {entry["key"] for entry in _KEY_REGISTRY}
+    source = (diagnostics.__file__ or "")
+    with open(source, encoding="utf-8") as handle:
+        text = handle.read()
+
+    # Env var names as they appear in the remedy strings.
+    named = set(re.findall(r"\b(META_[A-Z_]+|MASKANX_[A-Z_]+)\b", text))
+    named.discard("META_ADS_ACCOUNT_ID_ENV")
+
+    missing = sorted(named - listed)
+    assert not missing, (
+        f"Diagnostics tells the operator to set {missing} in Settings > "
+        f"Environments, but they are not in _KEY_REGISTRY so no field is "
+        f"shown for them."
+    )