3425421 - Could not parse attributes XML string for Channel[*]. Couldn't descramble pwd for attribute HttpPassword.

You're trying to:

• Activate a channel. 
• Performing a consistency check for a channel.
• Creating a new Adapter. 
• Trying to change an existing Adapter.

In the XPI trace, you can find the below error:

Failure at Cache-Refresh data consumption !!!
<?xml version="1.0" encoding="UTF-8"?>
<CacheRefreshError>
  <EngineType>AE</EngineType>
  <EngineName>***</EngineName>
  <RefreshMode>C</RefreshMode>
  <Channel>
    <PartyName></PartyName>
    <ServiceName>BC_XXX_TEST_RECEIVER</ServiceName>
    <ChannelName>REST_RECEIVER_LV_MATCHER_S4</ChannelName>
    <ChannelObjectId>***</ChannelObjectId>
    <ChannelError>
      <Message>
        Could not parse Channel '**********'(ObjectId: ***) AdapterType: REST|http://sap.com/xi/XI/System|***: 
      </Message>
      <Trace>
        com.sap.aii.af.service.cpa.impl.exception.CPASchemaException: Could not parse attributes XML string for Channel[REST] with Id ***. Reason: org.xml.sax.SAXException: Couldn't descramble pwd for attribute HttpPassword. Reason: java.lang.NullPointerException: while trying to get the length of a null array loaded from local variable 'bytes'
java.lang.NullPointerException: while trying to get the length of a null array loaded from local variable 'bytes'
at com.sap.aii.af.service.cpa.impl.schema.SchemaManagedCPAObject.parseObjectFromXML(SchemaManagedCPAObject.java:305)
at com.sap.aii.af.service.cpa.impl.container.AttributeExtendedCPAObjectImpl.getSchemaManagedObject(AttributeExtendedCPAObjectImpl.java:68)
at com.sap.aii.af.service.cpa.impl.container.AttributeExtendedCPAObjectImpl.parseXMLAttributes(AttributeExtendedCPAObjectImpl.java:90)
at...
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:185)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:302)
Caused by: org.xml.sax.SAXException: Couldn't descramble pwd for attribute HttpPassword. Reason: java.lang.NullPointerException: while trying to get the length of a null array loaded from local variable 'bytes'
java.lang.NullPointerException: while trying to get the length of a null array loaded from local variable 'bytes'
at com.sap.aii.af.service.cpa.impl.schema.SchemaManagedCPAObject$SAXHandler.endElement(SchemaManagedCPAObject.java:417)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:610)
at...
at com.sap.aii.af.service.cpa.impl.schema.SchemaManagedCPAObject.parseObjectFromXML(SchemaManagedCPAObject.java:298)
... 24 more
Caused by: java.lang.NullPointerException: while trying to get the length of a null array loaded from local variable 'bytes'
at java.lang.String.<init>(String.java:491)
at com.sap.aii.utilxi.misc.encrypt.HardWiredEncryptor.decryptBytes2String(HardWiredEncryptor.java:95)
at com.sap.aii.utilxi.misc.encrypt.HardWiredEncryptor.decryptString2String(HardWiredEncryptor.java:82)
at com.sap.aii.af.service.cpa.impl.schema.SchemaManagedCPAObject$SAXHandler.endElement(SchemaManagedCPAObject.java:413)
... 38 more

      </Trace>
    </ChannelError>
  </Channel>
</CacheRefreshError>

PS: This issue might also occur post SP upgrade (example SP25 to SP28).

SAP PI/PO, Process Integration, Process Orchestration, NWA 7.5

NWDS, PI, PO Process Integration, Process Orchestration, Integrated Flow, communication channel, CPA cache, SP28, SP27, SP26, SP25, SAP 7.5, while trying to get the length of a null array loaded from local variable 'bytes',  com.sap.aii.af.service.cpa.impl.exception.CPASchemaException: Could not parse attributes XML string for Channel[REST] with Id  , KBA , BC-XI-IBF-VNT , Versioning & Transport , BC-XI-IDE-IFL , NWDS / Eclipse IDE Tools for Integration Flow , BC-XI-IBC-SRV , Services , Problem