diff --git a/src/ExtractingInterface.php b/src/ExtractingInterface.php
index 8f46007..383e8d2 100644
--- a/src/ExtractingInterface.php
+++ b/src/ExtractingInterface.php
@@ -12,8 +12,9 @@ interface ExtractingInterface
      * @param ExtractorInterface<Type> $extractor
      */
     public function extract(
+        StepCodeInterface $step,
         ExtractorInterface $extractor,
-        RejectionInterface $rejection,
-        StateInterface $state,
+        StepRejectionInterface $rejection,
+        StepStateInterface $state,
     ): self;
 }
diff --git a/src/LoadingInterface.php b/src/LoadingInterface.php
index 3dc720f..073c97b 100644
--- a/src/LoadingInterface.php
+++ b/src/LoadingInterface.php
@@ -12,8 +12,9 @@ interface LoadingInterface
      * @param LoaderInterface<Type> $loader
      */
     public function load(
+        StepCodeInterface $step,
         LoaderInterface $loader,
-        RejectionInterface $rejection,
-        StateInterface $state,
+        StepRejectionInterface $rejection,
+        StepStateInterface $state,
     ): self;
 }
diff --git a/src/NullRejection.php b/src/NullRejection.php
index bd5b239..b2d5ab7 100644
--- a/src/NullRejection.php
+++ b/src/NullRejection.php
@@ -12,7 +12,7 @@ public function initialize(): void
     }
 
     /** @param non-empty-array<mixed>|object $rejection */
-    public function reject(array|object $rejection, \Throwable $exception = null, string $reason = null): void
+    public function reject(StepCodeInterface $step, array|object $rejection, \Throwable $exception = null, string $reason = null): void
     {
         // NOOP
     }
diff --git a/src/NullState.php b/src/NullState.php
index 437b6f9..c9b0970 100644
--- a/src/NullState.php
+++ b/src/NullState.php
@@ -11,17 +11,17 @@ public function initialize(int $start = 0): void
         // NOOP
     }
 
-    public function accept(int $step = 1): void
+    public function accept(StepCodeInterface $step, int $count = 1): void
     {
         // NOOP
     }
 
-    public function reject(int $step = 1): void
+    public function reject(StepCodeInterface $step, int $count = 1): void
     {
         // NOOP
     }
 
-    public function error(int $step = 1): void
+    public function error(StepCodeInterface $step, int $count = 1): void
     {
         // NOOP
     }
diff --git a/src/RejectionInterface.php b/src/RejectionInterface.php
index a11fdab..3dd1dda 100644
--- a/src/RejectionInterface.php
+++ b/src/RejectionInterface.php
@@ -9,7 +9,8 @@ interface RejectionInterface
     public function initialize(): void;
 
     /** @param non-empty-array<mixed>|object $rejection */
-    public function reject(array|object $rejection, \Throwable $exception = null, string $reason = null): void;
+    public function reject(StepCodeInterface $step, array|object $rejection, \Throwable $exception = null): void;
+    public function rejectWithReason(StepCodeInterface $step, object|array $rejection, string $reason, null|\Throwable $exception = null): void;
 
     public function teardown(): void;
 }
diff --git a/src/RejectionWithReasonInterface.php b/src/RejectionWithReasonInterface.php
deleted file mode 100644
index a8aedf7..0000000
--- a/src/RejectionWithReasonInterface.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Kiboko\Contract\Pipeline;
-
-interface RejectionWithReasonInterface extends RejectionInterface
-{
-    public function rejectWithReason(object|array $rejection, string $reason, null|\Throwable $exception = null): void;
-}
diff --git a/src/StateInterface.php b/src/StateInterface.php
index 9d7b5aa..a8f0551 100644
--- a/src/StateInterface.php
+++ b/src/StateInterface.php
@@ -8,11 +8,11 @@ interface StateInterface
 {
     public function initialize(int $start = 0): void;
 
-    public function accept(int $step = 1): void;
+    public function accept(StepCodeInterface $step, int $count = 1): void;
 
-    public function reject(int $step = 1): void;
+    public function reject(StepCodeInterface $step, int $count = 1): void;
 
-    public function error(int $step = 1): void;
+    public function error(StepCodeInterface $step, int $count = 1): void;
 
     public function teardown(): void;
 }
diff --git a/src/StepCodeInterface.php b/src/StepCodeInterface.php
new file mode 100644
index 0000000..d860c50
--- /dev/null
+++ b/src/StepCodeInterface.php
@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Contract\Pipeline;
+
+interface StepCodeInterface extends \Stringable
+{
+}
diff --git a/src/StepRejectionInterface.php b/src/StepRejectionInterface.php
new file mode 100644
index 0000000..1158302
--- /dev/null
+++ b/src/StepRejectionInterface.php
@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Contract\Pipeline;
+
+interface StepRejectionInterface
+{
+    public function initialize(): void;
+
+    /** @param non-empty-array<mixed>|object $rejection */
+    public function reject(array|object $rejection, \Throwable $exception = null): void;
+    public function rejectWithReason(object|array $rejection, string $reason, null|\Throwable $exception = null): void;
+
+    public function teardown(): void;
+}
diff --git a/src/StepStateInterface.php b/src/StepStateInterface.php
new file mode 100644
index 0000000..00f42b1
--- /dev/null
+++ b/src/StepStateInterface.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Contract\Pipeline;
+
+interface StepStateInterface
+{
+    public function accept(StepCodeInterface $step, int $count = 1): void;
+
+    public function reject(StepCodeInterface $step, int $count = 1): void;
+
+    public function error(StepCodeInterface $step, int $count = 1): void;
+}
diff --git a/src/TransformingInterface.php b/src/TransformingInterface.php
index 55a2ee5..c381f3b 100644
--- a/src/TransformingInterface.php
+++ b/src/TransformingInterface.php
@@ -12,8 +12,9 @@ interface TransformingInterface
      * @param TransformerInterface<Type> $transformer
      */
     public function transform(
+        StepCodeInterface $step,
         TransformerInterface $transformer,
-        RejectionInterface $rejection,
-        StateInterface $state,
+        StepRejectionInterface $rejection,
+        StepStateInterface $state,
     ): self;
 }