From 5abd3a5449e936a0a42fc8e179bfa4a407a5a40c Mon Sep 17 00:00:00 2001
From: larssandergreen <lars@wildsight.ca>
Date: Sat, 19 Aug 2023 21:15:59 -0600
Subject: [PATCH] Make import parser external ID error message more helpful

---
 CRM/Import/Parser.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/CRM/Import/Parser.php b/CRM/Import/Parser.php
index f8ec36d4e4..5f6a1c44b8 100644
--- a/CRM/Import/Parser.php
+++ b/CRM/Import/Parser.php
@@ -2219,7 +2219,9 @@ abstract class CRM_Import_Parser implements UserJobInterface {
     }
     //check if external identifier exists in database
     if ($contactID && $foundContact['id'] !== $contactID) {
-      throw new CRM_Core_Exception(ts('Existing external ID does not match the imported contact ID.'), CRM_Import_Parser::ERROR);
+      throw new CRM_Core_Exception(
+        ts('Imported external ID already belongs to an existing contact with a different contact ID than the imported contact ID or than the contact ID of the contact matched on the entity imported.'),
+        CRM_Import_Parser::ERROR);
     }
     return (int) $foundContact['id'];
   }
-- 
2.25.1