Harmonize and document restrictions and their meaning in different adapters.

[zambrovski]

  const val ACTIVITY_ID = "activityId"
  const val BUSINESS_KEY = "businessKey"
  const val CORRELATION_KEY = "correlationKey"
  const val PROCESS_DEFINITION_KEY = "processDefinitionKey"
  const val PROCESS_INSTANCE_ID = "processInstanceId"
  const val PROCESS_DEFINITION_ID = "processDefinitionId"
  const val PROCESS_DEFINITION_VERSION_TAG = "processDefinitionVersionTag"
  const val TASK_DEFINITION_KEY = "taskDefinitionKey"
  const val TENANT_ID = "tenantId"
  const val WITHOUT_TENANT_ID = "withoutTenantId"
  const val MESSAGE_ID = "messageId"
  const val MESSAGE_TTL = "messageTTL"
  const val EXECUTION_ID = "executionId"

Document those guys...