diff --git a/common/errors.py b/common/errors.py
new file mode 100644
index 00000000..502591c3
--- /dev/null
+++ b/common/errors.py
@@ -0,0 +1,19 @@
+class ContextLengthExceededError(Exception):
+    pass
+
+def validate_context_requirements(
+    context_len: int,
+    max_seq_len: int,
+    max_tokens: int,
+    cache_max_num_tokens: int = None,
+    max_rq_tokens: int = None,
+    allocation_boundary: int = None,
+):
+    if context_len > max_seq_len:
+        raise ContextLengthExceededError(
+            f"Prompt length {context_len} is greater than max_seq_len {max_seq_len}"
+        )
+    if cache_max_num_tokens is not None and context_len + max_tokens > cache_max_num_tokens:
+        raise ContextLengthExceededError(
+            f"Prompt length {context_len} + max_tokens {max_tokens} is greater than cache size {cache_max_num_tokens}"
+        )