diff --git a/spring-messaging/src/main/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensions.kt b/spring-messaging/src/main/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensions.kt
index 004b567a51e1..3e1897f67a91 100644
--- a/spring-messaging/src/main/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensions.kt
+++ b/spring-messaging/src/main/kotlin/org/springframework/messaging/rsocket/RSocketRequesterExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -110,6 +110,7 @@ suspend fun RSocketRequester.RetrieveSpec.sendAndAwait() {
 /**
  * Coroutines variant of [RSocketRequester.RetrieveSpec.retrieveMono].
  *
+ * @throws NoSuchElementException if the underlying [Mono] does not emit any value
  * @author Sebastien Deleuze
  * @since 5.2
  */
diff --git a/spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensions.kt b/spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensions.kt
index 56533c66d77c..ae6b6facd3a0 100644
--- a/spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensions.kt
+++ b/spring-r2dbc/src/main/kotlin/org/springframework/r2dbc/core/RowsFetchSpecExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,10 +19,12 @@ import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.reactive.asFlow
 import kotlinx.coroutines.reactor.awaitSingleOrNull
 import org.springframework.dao.EmptyResultDataAccessException
+import reactor.core.publisher.Mono
 
 /**
  * Non-nullable Coroutines variant of [RowsFetchSpec.one].
  *
+ * @throws EmptyResultDataAccessException if the underlying [Mono] does not emit any value
  * @author Sebastien Deleuze
  */
 @Suppress("DEPRECATION")
@@ -42,6 +44,7 @@ suspend fun <T> RowsFetchSpec<T>.awaitOneOrNull(): T? =
 /**
  * Non-nullable Coroutines variant of [RowsFetchSpec.first].
  *
+ * @throws EmptyResultDataAccessException if the underlying [Mono] does not emit any value
  * @author Sebastien Deleuze
  */
 @Suppress("DEPRECATION")
diff --git a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensions.kt b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensions.kt
index b922a0aaf801..5d5775b66419 100644
--- a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensions.kt
+++ b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/ClientResponseExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -102,6 +102,7 @@ suspend inline fun <reified T : Any> ClientResponse.awaitBody(): T =
  * `KClass` non-nullable coroutines variant of [ClientResponse.bodyToMono].
  * Please consider `awaitBody<Foo>` variant if possible.
  *
+ * @throws NoSuchElementException if the underlying [Mono] does not emit any value
  * @author Igor Manushin
  * @since 5.3
  */
diff --git a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/WebClientExtensions.kt b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/WebClientExtensions.kt
index 100898577903..6c181e1b666f 100644
--- a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/WebClientExtensions.kt
+++ b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/client/WebClientExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -143,6 +143,7 @@ inline fun <reified T : Any> WebClient.ResponseSpec.bodyToFlow(): Flow<T> =
 /**
  * Coroutines variant of [WebClient.ResponseSpec.bodyToMono].
  *
+ * @throws NoSuchElementException if the underlying [Mono] does not emit any value
  * @author Sebastien Deleuze
  * @since 5.2
  */
diff --git a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensions.kt b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensions.kt
index e446d51bfb3c..a0d563b02188 100644
--- a/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensions.kt
+++ b/spring-webflux/src/main/kotlin/org/springframework/web/reactive/function/server/ServerRequestExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -76,6 +76,7 @@ fun <T : Any> ServerRequest.bodyToFlow(clazz: KClass<T>): Flow<T> =
 /**
  * Non-nullable Coroutines variant of [ServerRequest.bodyToMono].
  *
+ * @throws NoSuchElementException if the underlying [Mono] does not emit any value
  * @author Sebastien Deleuze
  * @since 5.2
  */
@@ -86,6 +87,7 @@ suspend inline fun <reified T : Any> ServerRequest.awaitBody(): T =
  * `KClass` non-nullable Coroutines variant of [ServerRequest.bodyToMono].
  * Please consider `awaitBody<Foo>` variant if possible.
  *
+ * @throws NoSuchElementException if the underlying [Mono] does not emit any value
  * @author Igor Manushin
  * @since 5.3
  */