address copilot feedback

Author: tl-tai-tang

CHANGELOG.md

@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 ## [17.6.0] - 2026-05-15
 ### Added
-* * Add support for `user_interaction` and `use_cases` fields in payment API for commercial mandate 
+* Add support for `user_interaction` and `use_cases` fields in payment API for commercial mandate 
 
 ## [17.5.1] - 2025-10-31
 ### Fixed

src/main/java/com/truelayer/java/mandates/entities/mandatedetail/MandateDetail.java

@@ -8,6 +8,7 @@
 import com.truelayer.java.entities.UseCase;
 import com.truelayer.java.mandates.entities.Constraints;
 import com.truelayer.java.mandates.entities.beneficiary.Beneficiary;
+import com.truelayer.java.mandates.entities.mandate.Mandate;
 import com.truelayer.java.payments.entities.providerselection.ProviderSelection;
 import java.time.ZonedDateTime;
 import java.util.Map;
@@ -43,7 +44,7 @@ public abstract class MandateDetail {
 
     private UseCase useCase;
 
-    private String type;
+    private Mandate.Type type;
 
     public abstract Status getStatus();