Merge branch 'dev' into freight/feat/fixes-v1

apps/edr-freight-api/src/modules/billing/billing.service.ts

@@ -876,6 +876,11 @@ export class BillingService {
       );
     }
 
+    const amountDue = Number(invoice.balanceAmount ?? invoice.totalAmount);
+    if (!(amountDue > 0)) {
+      throw new BadRequestException("Invoice has no outstanding balance.");
+    }
+
     const result = await this.payment.initiate({
       referenceId: invoice.sourceId,
       source: invoice.source,