allow own ids

.gitea/workflows/build.yaml

@@ -26,7 +26,7 @@ jobs:
   BuildAndDeployArm64:
     runs-on: arm64
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v4
       - name: Build arm64 image
         run: |
           docker build \

pkg/cart/mutation_upsert_subscriptiondetails.go

@@ -39,7 +39,15 @@ func UpsertSubscriptionDetails(g *CartGrain, m *messages.UpsertSubscriptionDetai
 	// Update existing entry.
 	existing, ok := g.SubscriptionDetails[*m.Id]
 	if !ok {
-		return fmt.Errorf("subscription details not found")
+		n := &SubscriptionDetails{
+			Id:           *m.Id,
+			Version:      1,
+			OfferingCode: m.OfferingCode,
+			SigningType:  m.SigningType,
+			Meta:         json.RawMessage(metaBytes),
+		}
+		g.SubscriptionDetails[*m.Id] = n
+		existing = n
 	}
 	changed := false
 	if m.OfferingCode != "" {