From 9898e60e4024a1e1bacadf6b33cf32ae425a4cb9 Mon Sep 17 00:00:00 2001
From: shahoian <ruben.shahoyan@cern.ch>
Date: Thu, 20 Feb 2025 12:55:19 +0100
Subject: [PATCH] Fix for PV contributor being AB track

---
 Detectors/TPC/workflow/src/TPCTimeSeriesSpec.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Detectors/TPC/workflow/src/TPCTimeSeriesSpec.cxx b/Detectors/TPC/workflow/src/TPCTimeSeriesSpec.cxx
index 871fdc00555e8..4d20654d07c83 100644
--- a/Detectors/TPC/workflow/src/TPCTimeSeriesSpec.cxx
+++ b/Detectors/TPC/workflow/src/TPCTimeSeriesSpec.cxx
@@ -1288,7 +1288,7 @@ class TPCTimeSeries : public Task
           // make cut around DCA to vertex due to gammas
           if ((std::abs(dcaITSTPCTmp[0]) < maxITSTPCDCAr_comb) && (std::abs(dcaITSTPCTmp[1]) < maxITSTPCDCAz_comb)) {
             // propagate TPC track to ITS track and store delta track parameters
-            if (track.rotate(tracksITS[idxITSTrack].getAlpha()) && propagator->propagateTo(track, trackITSTPCTmp.getX(), false, mMaxSnp, mFineStep, mMatType)) {
+            if (idxITSTrack >= 0 && track.rotate(tracksITS[idxITSTrack].getAlpha()) && propagator->propagateTo(track, trackITSTPCTmp.getX(), false, mMaxSnp, mFineStep, mMatType)) {
               o2::track::TrackPar trackITS(tracksITS[idxITSTrack]);
               const bool propITSOk = propagator->propagateTo(trackITS, trackITSTPCTmp.getX(), false, mMaxSnp, mFineStep, mMatType);
               if (propITSOk) {