diff --git a/app/buck2_data/error.proto b/app/buck2_data/error.proto
index f89c45249a0ee..de94317071a49 100644
--- a/app/buck2_data/error.proto
+++ b/app/buck2_data/error.proto
@@ -226,6 +226,9 @@ enum ErrorTag {
   // Tests
   TEST_DEADLINE_EXPIRED = 5001;
 
+  // Error from TPX binary
+  TPX = 5500;
+
   // None turned into an error. This carries no useful information whatsoever.
   UNEXPECTED_NONE = 6001;
 }
diff --git a/app/buck2_error/src/classify.rs b/app/buck2_error/src/classify.rs
index 9c92fcca7e8ba..95b43bee2ed6f 100644
--- a/app/buck2_error/src/classify.rs
+++ b/app/buck2_error/src/classify.rs
@@ -173,6 +173,7 @@ pub(crate) fn category_and_rank(tag: ErrorTag) -> (Option<Tier>, u32) {
         ErrorTag::IoEdenUnknownField => rank!(unspecified),
         ErrorTag::MaterializationError => rank!(unspecified),
         ErrorTag::CleanInterrupt => rank!(unspecified),
+        ErrorTag::Tpx => rank!(unspecified),
         ErrorTag::Http => rank!(unspecified),
         ErrorTag::DownloadFileHeadRequest => rank!(unspecified),
         ErrorTag::Install => rank!(unspecified),
diff --git a/app/buck2_test/src/command.rs b/app/buck2_test/src/command.rs
index 275083010bba9..1b6fde18109ee 100644
--- a/app/buck2_test/src/command.rs
+++ b/app/buck2_test/src/command.rs
@@ -561,7 +561,7 @@ async fn test_targets(
 
     let res = tag_result!(
         "executor_launch_failed",
-        res.map_err(|e| from_any_with_tag(e, buck2_error::ErrorTag::Tier0)),
+        res.map_err(|e| from_any_with_tag(e, buck2_error::ErrorTag::Tpx)),
         quiet: true,
         daemon_in_memory_state_is_corrupted: true,
         task: false