[C8Y Java SDK] Error while creating externalID

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Hi Korbinian,

I truly appreciate your detailed guidance. I figured out what caused the error, but I still don’t understand why. It’s not related to the authentication.
Here is the summary:

  1. SDK version: 1018.0.151
  2. The error only occurs in the APJ environment, the same code runs well with other env
  3. In APJ env:
  • The error only occurs if I set this property to the managedObject before creating externalID: com_cumulocity_model_Agent: {} (I also set it in the other env and it can run well)
  • Error code:
            ManagedObjectRepresentation mo = new ManagedObjectRepresentation();
            mo.setName("test");
            mo.setType("test");
            mo.setProperty("com_cumulocity_model_Agent", "{}"); // No error without this line
            mo = inventoryApi.create(mo);
            
            ExternalIDRepresentation externalIDRepresentation = new ExternalIDRepresentation();
            externalIDRepresentation.setExternalId(externalId);
            externalIDRepresentation.setType("c8y_Serial");
            externalIDRepresentation.setManagedObject(mo);

            identityApi.create(externalIDRepresentation);

This is not the 1st time I encountered an error in APJ. This is an error I’ve encountered before, and it seems like it was fixed at some point: https://tech.forums.softwareag.com/t/cumulocity-notificaion-2-listen-to-device-notifcation/284834/11?u=elcarim1802

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