diff --git a/modules/serviceCenter/services/serviceSubscription/stripeBootstrap.py b/modules/serviceCenter/services/serviceSubscription/stripeBootstrap.py
index 38ac29e1..edb2df1f 100644
--- a/modules/serviceCenter/services/serviceSubscription/stripeBootstrap.py
+++ b/modules/serviceCenter/services/serviceSubscription/stripeBootstrap.py
@@ -154,6 +154,23 @@ def _createStripePrice(stripe, productId: str, unitAmountCHF: float, interval: s
     return price.id
 
 
+def _validateStripeIdsExist(stripe, mapping: StripePlanPrice) -> bool:
+    """Quick check whether at least the stored product IDs still exist in Stripe.
+    Returns False when running against a different Stripe account or after DB copy."""
+    try:
+        if mapping.stripeProductIdUsers:
+            stripe.Product.retrieve(mapping.stripeProductIdUsers)
+        if mapping.stripeProductIdInstances:
+            stripe.Product.retrieve(mapping.stripeProductIdInstances)
+        return True
+    except Exception as e:
+        code = getattr(e, "code", None)
+        if code == "resource_missing":
+            return False
+        logger.debug("Stripe validation check failed (non-critical): %s", e)
+        return False
+
+
 def bootstrapStripePrices() -> None:
     """Ensure all paid plans have separate Stripe Products for users and instances."""
     try:
@@ -183,30 +200,37 @@ def bootstrapStripePrices() -> None:
             hasAllPrices = mapping.stripePriceIdUsers and mapping.stripePriceIdInstances
             hasAllProducts = mapping.stripeProductIdUsers and mapping.stripeProductIdInstances
             if hasAllPrices and hasAllProducts:
-                changed = False
-                reconciledUsers = _reconcilePrice(
-                    stripe, mapping.stripeProductIdUsers, mapping.stripePriceIdUsers,
-                    plan.pricePerUserCHF, interval, f"{planKey} — Benutzer-Lizenz",
-                )
-                if reconciledUsers != mapping.stripePriceIdUsers:
-                    changed = True
+                if _validateStripeIdsExist(stripe, mapping):
+                    changed = False
+                    reconciledUsers = _reconcilePrice(
+                        stripe, mapping.stripeProductIdUsers, mapping.stripePriceIdUsers,
+                        plan.pricePerUserCHF, interval, f"{planKey} — Benutzer-Lizenz",
+                    )
+                    if reconciledUsers != mapping.stripePriceIdUsers:
+                        changed = True
 
-                reconciledInstances = _reconcilePrice(
-                    stripe, mapping.stripeProductIdInstances, mapping.stripePriceIdInstances,
-                    plan.pricePerFeatureInstanceCHF, interval, f"{planKey} — Feature-Instanz",
-                )
-                if reconciledInstances != mapping.stripePriceIdInstances:
-                    changed = True
+                    reconciledInstances = _reconcilePrice(
+                        stripe, mapping.stripeProductIdInstances, mapping.stripePriceIdInstances,
+                        plan.pricePerFeatureInstanceCHF, interval, f"{planKey} — Feature-Instanz",
+                    )
+                    if reconciledInstances != mapping.stripePriceIdInstances:
+                        changed = True
 
-                if changed:
-                    db.recordModify(StripePlanPrice, mapping.id, {
-                        "stripePriceIdUsers": reconciledUsers,
-                        "stripePriceIdInstances": reconciledInstances,
-                    })
-                    logger.info("Reconciled Stripe prices for plan %s: users=%s, instances=%s", planKey, reconciledUsers, reconciledInstances)
+                    if changed:
+                        db.recordModify(StripePlanPrice, mapping.id, {
+                            "stripePriceIdUsers": reconciledUsers,
+                            "stripePriceIdInstances": reconciledInstances,
+                        })
+                        logger.info("Reconciled Stripe prices for plan %s: users=%s, instances=%s", planKey, reconciledUsers, reconciledInstances)
+                    else:
+                        logger.debug("Stripe prices up-to-date for plan %s", planKey)
+                    continue
                 else:
-                    logger.debug("Stripe prices up-to-date for plan %s", planKey)
-                continue
+                    logger.warning(
+                        "Stored Stripe IDs for plan %s reference unknown objects "
+                        "(likely wrong Stripe account or copied DB) — re-provisioning.",
+                        planKey,
+                    )
 
         productIdUsers = None
         productIdInstances = None