Deployment error

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Mendix startup fails due to orphaned Administration.Account_Log association after log deletion. How can I fix it safely?There is an association Account_Log but i am not using any where and getting this issue suddenly.ERROR: Executing start did not succeed: result: 1, message: class com.mendix.m2ee.api.internal.AdminException occurred while executing an admin action request. See logging output for details., caused by: class com.mendix.connectionbus.ConnectionBusRuntimeException occurred while executing an admin action request. See logging output for details.2026-02-12 14:42:25.585 ERROR - M2EE: An error occurred while initializing the Runtime: Could not find child entity with id 11d06702-ace8-447c-8f1a-b58fefdebf95 for association Administration.Account_Logcom.mendix.m2ee.api.internal.AdminException: An error occurred while initializing the Runtime: Could not find child entity with id 11d06702-ace8-447c-8f1a-b58fefdebf95 for association Administration.Account_Log at com.mendix.basis.impl.MxRuntimeImpl.start(MxRuntimeImpl.scala:210)Caused by: com.mendix.connectionbus.ConnectionBusRuntimeException: Could not find child entity with id 11d06702-ace8-447c-8f1a-b58fefdebf95 for association Administration.Account_Log at com.mendix.connectionbus.modelsynchronization.analysis.mappingreaders.DatabaseMappingReader.$anonfun$fillAssociations$3(DatabaseMappingReader.scala:283) at scala.Option.getOrElse(Option.scala:201) at com.mendix.connectionbus.modelsynchronization.analysis.mappingreaders.DatabaseMappingReader.handleAssociationResult$1(DatabaseMappingReader.scala:283) at com.mendix.connectionbus.modelsynchronization.analysis.mappingreaders.DatabaseMappingReader.$anonfun$fillAssociations$5(DatabaseMappingReader.scala:318)
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1 answers
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Hello,


This usually happens when the database still contains a reference to a log record that no longer exists. Even if you’re not using the Account_Log association directly, it’s a system association used internally by Mendix.

Safest and quickest fix (for local/dev):

  1. Stop the app
  2. In Studio Pro, click the arrow next to Run
  3. Select Clean Deployment Directory
  4. Run the app again

This will recreate the database and remove the broken association.

If this is production, don’t delete the database — instead clean the orphaned records via SQL or restore a backup.

Thanks

answered