functions plugin does not redeploy app

[end-user]

Plugin name and version

azure-functions-maven-plugin v1.29.0

Plugin configuration in your pom.xml

 <plugin>
                <groupId>com.microsoft.azure</groupId>
                <artifactId>azure-functions-maven-plugin</artifactId>
                <version>${azure.functions.maven.plugin.version}</version>
                <configuration>
                    <appName>${functionAppName}</appName>
                    <resourceGroup>${functionResourceGroup}</resourceGroup>
                    <region>${functionAppRegion}</region>
                    <appServicePlanName>${functionAppServicePlanName}</appServicePlanName>
                    <!--                    <pricingTier>${functionPricingTier}</pricingTier>-->
                    <hostJson>${project.basedir}/src/main/resources/host.json</hostJson>
                    <localSettingsJson>${project.basedir}/src/main/resources/local.settings.json</localSettingsJson>
                    <runtime>
                        <os>linux</os>
                        <javaVersion>${java.version}</javaVersion>
                    </runtime>
                    <appSettings>
                        <property>
                            <name>FUNCTIONS_EXTENSION_VERSION</name>
                            <value>~4</value>
                        </property>
                    </appSettings>
                </configuration>
                <executions>
                    <execution>
                        <id>package-functions</id>
                        <goals>
                            <goal>package</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

Expected behavior

using mvn -DskipTests package azure-functions:deploy will push an updated version to existing Azure enironment

Actual behavior

errors out with 'Website with given name already exists.'

Steps to reproduce the problem

run the above command

[wangmingliang-ms]

did you change the value of functionResourceGroup and functionAppServicePlanName? please make sure all its parent "components"(subscription, resource group, service plan, region, etc.) are correct if you want to update an exiting app. it will try to create a new app otherwise.

[end-user]

Well, there's no configuration for subscription, and the name and resource groups are the only required values, but yes, I confirmed it's all named the same/correctly.

[end-user]

Nope; I discovered that it was indeed pushing to the wrong subscription. The plugin output does a good job of displaying that information, I just hadn't looked at it.