MC-17753: Authorize.net Cannot read property 'length' of null

Author: StasKozar

app/code/Magento/AuthorizenetAcceptjs/Test/Mftf/ActionGroup/ConfigureAuthorizenetAcceptjsActionGroup.xml

@@ -34,7 +34,7 @@
         <selectOption selector="{{AuthorizenetAcceptjsConfigurationSection.enabledDefaultSelect}}" userInput="Yes" stepKey="enablePayment"/>
     </actionGroup>
 
-    <actionGroup name="AssertAuthorizenetAcceptjsRequiredFieldsValidationArePresentOnSave">
+    <actionGroup name="AssertAuthorizenetAcceptjsRequiredFieldsValidationIsPresentOnSave">
         <scrollToTopOfPage stepKey="scrollToTop"/>
         <click selector="{{AdminMainActionsSection.save}}" stepKey="clickSave"/>
         <scrollTo selector="{{AuthorizenetAcceptjsConfigurationSection.apiLoginIdField}}" stepKey="scrollToApiLoginIdField"/>

app/code/Magento/AuthorizenetAcceptjs/Test/Mftf/Test/FullCaptureAuthorizenetAcceptjsTest.xml

@@ -32,7 +32,6 @@
 
             <!--Configure Auth.net-->
             <amOnPage url="{{AdminConfigPaymentMethodsPage.url}}" stepKey="navigateToPaymentConfigurationPage"/>
-            <actionGroup ref="EnableAuthorizenetAcceptjs" stepKey="enableAuthorizenetAcceptjs"/>
             <actionGroup ref="ConfigureAuthorizenetAcceptjs" stepKey="configureAuthorizenetAcceptjs">
                 <argument name="paymentAction" value="Authorize Only"/>
             </actionGroup>

app/code/Magento/AuthorizenetAcceptjs/Test/Mftf/Test/GuestCheckoutVirtualProductAuthorizenetAcceptjsTest.xml

@@ -37,7 +37,6 @@
 
             <!--Configure Auth.net-->
             <amOnPage url="{{AdminConfigPaymentMethodsPage.url}}" stepKey="navigateToPaymentConfigurationPage"/>
-            <actionGroup ref="EnableAuthorizenetAcceptjs" stepKey="enableAuthorizenetAcceptjs"/>
             <actionGroup ref="ConfigureAuthorizenetAcceptjs" stepKey="configureAuthorizenetAcceptjs">
                 <argument name="paymentAction" value="Authorize and Capture"/>
             </actionGroup>