diff --git a/CHANGES/+error-on-reject.feature b/CHANGES/+error-on-reject.feature
new file mode 100644
index 000000000..816cb6ae5
--- /dev/null
+++ b/CHANGES/+error-on-reject.feature
@@ -0,0 +1 @@
+Added `--error-on-reject`/`--no-error-on-reject` options to `pulp python repository`.
diff --git a/pulp-glue/src/pulp_glue/python/context.py b/pulp-glue/src/pulp_glue/python/context.py
index d1f8dce38..f576149f4 100644
--- a/pulp-glue/src/pulp_glue/python/context.py
+++ b/pulp-glue/src/pulp_glue/python/context.py
@@ -134,6 +134,8 @@ def preprocess_entity(self, body: EntityDefinition, partial: bool = False) -> En
         body = super().preprocess_entity(body, partial=partial)
         if "allow_package_substitution" in body:
             self.pulp_ctx.needs_plugin(PluginRequirement("python", specifier=">=3.28.0"))
+        if "error_on_reject" in body:
+            self.pulp_ctx.needs_plugin(PluginRequirement("python", specifier=">=3.34.0"))
         return body
 
     def repair_metadata(self) -> t.Any:
diff --git a/src/pulpcore/cli/python/repository.py b/src/pulpcore/cli/python/repository.py
index f8d958f66..5322e3914 100644
--- a/src/pulpcore/cli/python/repository.py
+++ b/src/pulpcore/cli/python/repository.py
@@ -91,6 +91,16 @@ def repository() -> None:
             " different checksum. When blocked, such operations are rejected."
         ),
     ),
+    pulp_option(
+        "--error-on-reject/--no-error-on-reject",
+        needs_plugins=[PluginRequirement("python", specifier=">=3.34.0")],
+        default=None,
+        help=_(
+            "Fail the entire repository version when packages are rejected by the"
+            " package substitution or blocklist policies. When disabled, rejected"
+            " packages are skipped and remaining packages are added."
+        ),
+    ),
     retained_versions_option,
     pulp_labels_option,
 ]
diff --git a/tests/scripts/pulp_python/test_repository.sh b/tests/scripts/pulp_python/test_repository.sh
index f1a60b4e6..273198c34 100755
--- a/tests/scripts/pulp_python/test_repository.sh
+++ b/tests/scripts/pulp_python/test_repository.sh
@@ -45,4 +45,12 @@ if pulp debug has-plugin --name "python" --specifier ">=3.28.0"; then
   expect_succ test "$(echo "$OUTPUT" | jq -r '.allow_package_substitution')" = "false"
 fi
 
+if pulp debug has-plugin --name "python" --specifier ">=3.34.0"; then
+  expect_succ pulp python repository show --repository "cli_test_python_repo"
+  expect_succ test "$(echo "$OUTPUT" | jq -r '.error_on_reject')" = "true"
+  expect_succ pulp python repository update --repository "cli_test_python_repo" --no-error-on-reject
+  expect_succ pulp python repository show --repository "cli_test_python_repo"
+  expect_succ test "$(echo "$OUTPUT" | jq -r '.error_on_reject')" = "false"
+fi
+
 expect_succ pulp python repository destroy --name "cli_test_python_repo"