diff --git a/internal/provider/resource_subaccount_entitlement.go b/internal/provider/resource_subaccount_entitlement.go
index 473da441..a2c706cd 100644
--- a/internal/provider/resource_subaccount_entitlement.go
+++ b/internal/provider/resource_subaccount_entitlement.go
@@ -369,7 +369,7 @@ func (rs *subaccountEntitlementResource) Delete(ctx context.Context, req resourc
 
 			// No error returned even if operation failed
 			if entitlement.Assignment.EntityState == cis_entitlements.StateProcessingFailed {
-				return *entitlement, entitlement.Assignment.EntityState, errors.New("undefined API error during entitlement processing")
+				return *entitlement, entitlement.Assignment.EntityState, errors.New(entitlement.Assignment.StateMessage)
 			}
 
 			return entitlement, cis_entitlements.StateProcessing, nil