Try using maven-publish plugin

Author: lauzadis

aws-runtime/build.gradle.kts

@@ -2,7 +2,7 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
-import aws.sdk.kotlin.gradle.dsl.configurePublishing
+import aws.sdk.kotlin.gradle.dsl.configureNexusPublishing
 import aws.sdk.kotlin.gradle.kmp.kotlin
 import aws.sdk.kotlin.gradle.kmp.needsKmpConfigured
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
@@ -32,7 +32,7 @@ subprojects {
         plugin(libraries.plugins.aws.kotlin.repo.tools.kmp.get().pluginId)
     }
 
-    configurePublishing("aws-sdk-kotlin")
+    configureNexusPublishing("aws-sdk-kotlin")
 
     kotlin {
         explicitApi()

bom/build.gradle.kts

@@ -2,7 +2,7 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
-import aws.sdk.kotlin.gradle.dsl.configurePublishing
+import aws.sdk.kotlin.gradle.dsl.configureNexusPublishing
 import org.jetbrains.kotlin.gradle.dsl.KotlinMultiplatformExtension
 import org.jetbrains.kotlin.gradle.plugin.KotlinMultiplatformPluginWrapper
 import org.jetbrains.kotlin.gradle.plugin.KotlinTarget
@@ -98,7 +98,7 @@ fun DependencyConstraintHandler.api(constraintNotation: Any) =
 
 createBomConstraintsAndVersionCatalog()
 
-configurePublishing("aws-sdk-kotlin")
+configureNexusPublishing("aws-sdk-kotlin")
 
 publishing {
     publications {

build.gradle.kts

@@ -91,7 +91,7 @@ dependencies {
 }
 
 // Publishing
-configureJReleaser()
+configureNexus() // no params means using Central Portal API
 
 // Code Style
 val lintPaths = listOf(

hll/build.gradle.kts

@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import aws.sdk.kotlin.gradle.dsl.configurePublishing
+import aws.sdk.kotlin.gradle.dsl.configureNexusPublishing
 import aws.sdk.kotlin.gradle.kmp.kotlin
 import aws.sdk.kotlin.gradle.kmp.needsKmpConfigured
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
@@ -46,7 +46,7 @@ val hllPreviewVersion = if (sdkVersion.contains("-SNAPSHOT")) { // e.g. 1.3.29-b
 subprojects {
     group = "com.sonatype.central.testing.amazon"
     version = hllPreviewVersion
-    configurePublishing("aws-sdk-kotlin")
+    configureNexusPublishing("aws-sdk-kotlin")
 }
 
 subprojects {

services/build.gradle.kts

@@ -2,7 +2,7 @@
  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
  * SPDX-License-Identifier: Apache-2.0
  */
-import aws.sdk.kotlin.gradle.dsl.configurePublishing
+import aws.sdk.kotlin.gradle.dsl.configureNexusPublishing
 import aws.sdk.kotlin.gradle.kmp.*
 import aws.sdk.kotlin.gradle.util.typedProp
 import org.jetbrains.kotlin.gradle.dsl.JvmTarget
@@ -135,7 +135,7 @@ subprojects {
         }
     }
 
-    configurePublishing("aws-sdk-kotlin")
+    configureNexusPublishing("aws-sdk-kotlin")
 
     publishing {
         publications.all {