diff --git a/src/main/kotlin/dev/dnpm/etl/processor/config/AppKafkaConfiguration.kt b/src/main/kotlin/dev/dnpm/etl/processor/config/AppKafkaConfiguration.kt
index f81d3fb..7adcb02 100644
--- a/src/main/kotlin/dev/dnpm/etl/processor/config/AppKafkaConfiguration.kt
+++ b/src/main/kotlin/dev/dnpm/etl/processor/config/AppKafkaConfiguration.kt
@@ -43,9 +43,10 @@ class AppKafkaConfiguration {
     @Bean
     fun kafkaMtbFileSender(
         kafkaTemplate: KafkaTemplate<String, String>,
+        kafkaTargetProperties: KafkaTargetProperties,
         objectMapper: ObjectMapper
     ): MtbFileSender {
-        return KafkaMtbFileSender(kafkaTemplate, objectMapper)
+        return KafkaMtbFileSender(kafkaTemplate, kafkaTargetProperties, objectMapper)
     }
 
     @Bean
@@ -54,7 +55,7 @@ class AppKafkaConfiguration {
         kafkaTargetProperties: KafkaTargetProperties,
         kafkaResponseProcessor: KafkaResponseProcessor
     ): KafkaMessageListenerContainer<String, String> {
-        val containerProperties = ContainerProperties(kafkaTargetProperties.responseTopic);
+        val containerProperties = ContainerProperties(kafkaTargetProperties.responseTopic)
         containerProperties.messageListener = kafkaResponseProcessor
         return KafkaMessageListenerContainer(consumerFactory, containerProperties)
     }
diff --git a/src/main/kotlin/dev/dnpm/etl/processor/output/KafkaMtbFileSender.kt b/src/main/kotlin/dev/dnpm/etl/processor/output/KafkaMtbFileSender.kt
index da25576..d903745 100644
--- a/src/main/kotlin/dev/dnpm/etl/processor/output/KafkaMtbFileSender.kt
+++ b/src/main/kotlin/dev/dnpm/etl/processor/output/KafkaMtbFileSender.kt
@@ -22,11 +22,13 @@ package dev.dnpm.etl.processor.output
 import com.fasterxml.jackson.databind.ObjectMapper
 import de.ukw.ccc.bwhc.dto.Consent
 import de.ukw.ccc.bwhc.dto.MtbFile
+import dev.dnpm.etl.processor.config.KafkaTargetProperties
 import org.slf4j.LoggerFactory
 import org.springframework.kafka.core.KafkaTemplate
 
 class KafkaMtbFileSender(
     private val kafkaTemplate: KafkaTemplate<String, String>,
+    private val kafkaTargetProperties: KafkaTargetProperties,
     private val objectMapper: ObjectMapper
 ) : MtbFileSender {
 
@@ -34,13 +36,14 @@ class KafkaMtbFileSender(
 
     override fun send(request: MtbFileSender.MtbFileRequest): MtbFileSender.Response {
         return try {
-            val result = kafkaTemplate.sendDefault(
-                header(request),
+            val result = kafkaTemplate.send(
+                kafkaTargetProperties.topic,
+                key(request),
                 objectMapper.writeValueAsString(request.mtbFile)
             )
             if (result.get() != null) {
                 logger.debug("Sent file via KafkaMtbFileSender")
-                MtbFileSender.Response(MtbFileSender.ResponseStatus.SUCCESS)
+                MtbFileSender.Response(MtbFileSender.ResponseStatus.UNKNOWN)
             } else {
                 MtbFileSender.Response(MtbFileSender.ResponseStatus.ERROR)
             }
@@ -61,14 +64,15 @@ class KafkaMtbFileSender(
             .build()
 
         return try {
-            val result = kafkaTemplate.sendDefault(
-                header(request),
+            val result = kafkaTemplate.send(
+                kafkaTargetProperties.topic,
+                key(request),
                 objectMapper.writeValueAsString(dummyMtbFile)
             )
 
             if (result.get() != null) {
                 logger.debug("Sent deletion request via KafkaMtbFileSender")
-                MtbFileSender.Response(MtbFileSender.ResponseStatus.SUCCESS)
+                MtbFileSender.Response(MtbFileSender.ResponseStatus.UNKNOWN)
             } else {
                 MtbFileSender.Response(MtbFileSender.ResponseStatus.ERROR)
             }
@@ -78,13 +82,13 @@ class KafkaMtbFileSender(
         }
     }
 
-    private fun header(request: MtbFileSender.MtbFileRequest): String {
+    private fun key(request: MtbFileSender.MtbFileRequest): String {
         return "{\"pid\": \"${request.mtbFile.patient.id}\", " +
                 "\"eid\": \"${request.mtbFile.episode.id}\", " +
                 "\"requestId\": \"${request.requestId}\"}"
     }
 
-    private fun header(request: MtbFileSender.DeleteRequest): String {
+    private fun key(request: MtbFileSender.DeleteRequest): String {
         return "{\"pid\": \"${request.patientId}\", " +
                 "\"requestId\": \"${request.requestId}\"}"
     }
diff --git a/src/main/kotlin/dev/dnpm/etl/processor/services/kafka/KafkaResponseProcessor.kt b/src/main/kotlin/dev/dnpm/etl/processor/services/kafka/KafkaResponseProcessor.kt
index 547833c..fd047d0 100644
--- a/src/main/kotlin/dev/dnpm/etl/processor/services/kafka/KafkaResponseProcessor.kt
+++ b/src/main/kotlin/dev/dnpm/etl/processor/services/kafka/KafkaResponseProcessor.kt
@@ -42,6 +42,9 @@ class KafkaResponseProcessor(
             val responseKey = objectMapper.readValue(data.key(), ResponseKey::class.java)
             requestRepository.findByUuidEquals(responseKey.requestId).ifPresent {
                 val responseBody = objectMapper.readValue(data.value(), ResponseBody::class.java)
+
+                println("${responseBody.statusCode}")
+
                 when (responseBody.statusCode) {
                     200 -> {
                         it.status = RequestStatus.SUCCESS
@@ -69,6 +72,16 @@ class KafkaResponseProcessor(
                         requestRepository.save(it)
                     }
 
+                    in 900..999 -> {
+                        it.status = RequestStatus.ERROR
+                        it.processedAt = Instant.ofEpochMilli(data.timestamp())
+                        it.report = Report(
+                            "Fehler bei der Datenübertragung, keine Verbindung zum bwHC-Backend möglich",
+                            objectMapper.writeValueAsString(responseBody.statusBody)
+                        )
+                        requestRepository.save(it)
+                    }
+
                     else -> {
                         logger.error("Cannot process Kafka response: Unknown response code!")
                     }
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 72edde6..5cd47c0 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -1,8 +1,6 @@
 spring:
   kafka:
     bootstrap-servers: ${app.kafka.servers}
-    template:
-      default-topic: ${app.kafka.topic}
     consumer:
       group-id: ${app.kafka.group-id}
   flyway: