diff --git a/src/core/models/schedules.py b/src/core/models/schedules.py
index 88caa2d7e5782c429d0f832bfdaeefc1eed1d8e5..aed616a497c2659faa6e4b1bf292f6dd723c06bc 100644
--- a/src/core/models/schedules.py
+++ b/src/core/models/schedules.py
@@ -348,8 +348,6 @@ class ScheduleSource(models.Model):
                 )
                 logging.exception('Import on ScheduleSource %s encountered exception on creating mapping for %s "%s".', self.pk, item_type, item_source_id)
 
-                # ... and delete the incomplete (wrong) mapping
-                mapping.delete()
                 return 'error'
 
             else: