From 7e6992921eeb1fb6a67612ffec30b6ac180ea22a Mon Sep 17 00:00:00 2001
From: David Rohr <drohr@jwdt.org>
Date: Wed, 11 Sep 2024 19:17:08 +0200
Subject: [PATCH] GPU: Clarify error message

---
 GPU/GPUTracking/Global/GPUChainTracking.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/GPU/GPUTracking/Global/GPUChainTracking.cxx b/GPU/GPUTracking/Global/GPUChainTracking.cxx
index 95575eb6b9c0e..054272823b83b 100644
--- a/GPU/GPUTracking/Global/GPUChainTracking.cxx
+++ b/GPU/GPUTracking/Global/GPUChainTracking.cxx
@@ -314,7 +314,7 @@ bool GPUChainTracking::ValidateSettings()
       return false;
     }
     if (!(GetRecoStepsGPU() & GPUDataTypes::RecoStep::TPCCompression) || !(GetRecoStepsGPU() & GPUDataTypes::RecoStep::TPCClusterFinding) || param().rec.fwdTPCDigitsAsClusters) {
-      GPUError("Invalid reconstruction settings for double pipeline");
+      GPUError("Invalid reconstruction settings for double pipeline: Needs compression and cluster finding");
       return false;
     }
   }