3657527 - "ERROR put returned 489: Unknown PUT: An error occurred during index data deserialization" when using BPM archiving

• You are using BPM Archiving functionality;
• You have updated your system with the SAP Note 3610892 - [CVE-2025-42966] Insecure Deserialization vulnerability in SAP NetWeaver (XML Data Archiving Service);
• You are facing error similar to below:
  
  Start processing of archiving write command ...
  Verify Indexes ...
  ERROR  put returned 489: Unknown # 
  PUT: An error occurred during index data deserialization: java.io.InvalidClassException: Unauthorized deserialization attempt: ; java.lang.Short
  at com.sap.archtech.daservice.commands.PutMethod$InputSerializator.resolveClass(PutMethod.java:1654)
  at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:2029)
  at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1893)
  at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2227)
  at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1710)
  at java.io.ObjectInputStream.readObject(ObjectInputStream.java:508)
  at java.io.ObjectInputStream.readObject(ObjectInputStream.java:466)
  at java.util.HashMap.readObject(HashMap.java:1418) 
  ERROR  Processing of archiving write command failed
  
• It can also be a deserialization of classes: java.lang.Float, java.lang.Short, java.lang.Byte, java.lang.Integer, java.lang.Number, java.lang.Long. 

• SAP Data Archiving Service
• BPM Archiving

ERROR  put returned 489, put returned 489, Unauthorized deserialization attempt, An error occurred during index data deserialization, PUT: An error occurred during index data deserialization , KBA , BC-ILM-DAS , XML Data Archiving Service , Known Error