The exporter is how data is sent to the Splunk AppDynamics backend. For Splunk AppDynamics for OpenTelemetry, only HTTP is supported to transmit OTLP trace export calls. Your tracer/SDKs exporter should be based on OTLP version >= 0.9.0.

In the exporters.otlphttp section, you must configure the following attributes with the Splunk AppDynamics endpoint and API key:

exporters:
  otlphttp:
    endpoint: "<appd-endpoint>"
    headers: {"x-api-key":"<x-api-key>" }
    compression: none    # applicable only to otel-collector versions 0.44 or later.
    tls:
      insecure: false
      ca_file: /etc/ca.crt
      cert_file: /etc/server.crt
      key_file: /etc/tls.key 

For more details on <x-api-key> and <appd-endpoint> see Attribute Descriptions.