diff --git a/internal/core/src/common/EasyAssert.h b/internal/core/src/common/EasyAssert.h
index 4d84b45aea..0182e256e5 100644
--- a/internal/core/src/common/EasyAssert.h
+++ b/internal/core/src/common/EasyAssert.h
@@ -59,6 +59,7 @@ enum ErrorCode {
     ExprInvalid = 2028,
     UnistdError = 2030,
     MetricTypeNotMatch = 2031,
+    DimNotMatch = 2032,
     KnowhereError = 2100,
 
 };
diff --git a/internal/core/src/query/Plan.cpp b/internal/core/src/query/Plan.cpp
index e74e387111..87f1488753 100644
--- a/internal/core/src/query/Plan.cpp
+++ b/internal/core/src/query/Plan.cpp
@@ -49,8 +49,14 @@ ParsePlaceholderGroup(const Plan* plan,
         AssertInfo(element.num_of_queries_, "must have queries");
         Assert(element.num_of_queries_ > 0);
         element.line_sizeof_ = info.values().Get(0).size();
-        AssertInfo(field_meta.get_sizeof() == element.line_sizeof_,
-                   "vector dimension mismatch");
+        if (field_meta.get_sizeof() != element.line_sizeof_) {
+            throw SegcoreError(
+                DimNotMatch,
+                fmt::format("vector dimension mismatch, expected vector "
+                            "size(byte) {}, actual {}.",
+                            field_meta.get_sizeof(),
+                            element.line_sizeof_));
+        }
         auto& target = element.blob_;
         target.reserve(element.line_sizeof_ * element.num_of_queries_);
         for (auto& line : info.values()) {