diff --git a/ui-ngx/src/app/shared/models/constants.ts b/ui-ngx/src/app/shared/models/constants.ts
index 5170e8a160..6aafef4b83 100644
--- a/ui-ngx/src/app/shared/models/constants.ts
+++ b/ui-ngx/src/app/shared/models/constants.ts
@@ -152,6 +152,10 @@ export const HelpLinks = {
     ruleNodeRestCallReply: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/action-nodes/#rest-call-reply-node`,
     ruleNodePushToCloud: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/action-nodes/#push-to-cloud`,
     ruleNodePushToEdge: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/action-nodes/#push-to-edge`,
+    ruleNodeAcknowledge: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/flow-nodes/#acknowledge-node`,
+    ruleNodeCheckpoint: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/flow-nodes/#checkpoint-node`,
+    ruleNodeSendNotification: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/external-nodes/#send-notification-node`,
+    ruleNodeSendSlack: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/rule-engine-2-0/external-nodes/#send-to-slack-node`,
     tenants: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/tenants`,
     tenantProfiles: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/tenant-profiles`,
     customers: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/customers`,
@@ -186,7 +190,7 @@ export const HelpLinks = {
     jwtSecuritySettings: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/jwt-security-settings`,
     gatewayInstall: `${helpBaseUrl}/docs/iot-gateway/install/docker-installation`,
     scada: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/scada`,
-    scadaSymbolDev: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/scada/symbols-dev-guide`,
+    scadaSymbolDev: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/scada/scada-symbols-dev-guide/`,
     scadaSymbolDevAnimation: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/scada/scada-symbols-dev-guide/#scadasymbolanimation`,
     mobileApplication: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/mobile-qr-code/`,
     mobileBundle: `${helpBaseUrl}/docs${docPlatformPrefix}/user-guide/ui/mobile-qr-code/`,
diff --git a/ui-ngx/src/app/shared/models/rule-node.models.ts b/ui-ngx/src/app/shared/models/rule-node.models.ts
index ef3b5147fb..712b225743 100644
--- a/ui-ngx/src/app/shared/models/rule-node.models.ts
+++ b/ui-ngx/src/app/shared/models/rule-node.models.ts
@@ -493,7 +493,7 @@ const ruleNodeClazzHelpLinkMap = {
   'org.thingsboard.rule.engine.telemetry.TbMsgAttributesNode': 'ruleNodeSaveAttributes',
   'org.thingsboard.rule.engine.telemetry.TbMsgTimeseriesNode': 'ruleNodeSaveTimeseries',
   'org.thingsboard.rule.engine.action.TbSaveToCustomCassandraTableNode': 'ruleNodeSaveToCustomTable',
-  'org.thingsboard.rule.engine.aws.lambda.TbLambdaNode': 'ruleNodeAwsLambda',
+  'org.thingsboard.rule.engine.aws.lambda.TbAwsLambdaNode': 'ruleNodeAwsLambda',
   'org.thingsboard.rule.engine.aws.sns.TbSnsNode': 'ruleNodeAwsSns',
   'org.thingsboard.rule.engine.aws.sqs.TbSqsNode': 'ruleNodeAwsSqs',
   'org.thingsboard.rule.engine.kafka.TbKafkaNode': 'ruleNodeKafka',
@@ -507,8 +507,12 @@ const ruleNodeClazzHelpLinkMap = {
   'org.thingsboard.rule.engine.edge.TbMsgPushToEdgeNode': 'ruleNodePushToEdge',
   'org.thingsboard.rule.engine.flow.TbRuleChainInputNode': 'ruleNodeRuleChain',
   'org.thingsboard.rule.engine.flow.TbRuleChainOutputNode': 'ruleNodeOutputNode',
+  'org.thingsboard.rule.engine.flow.TbAckNode': 'ruleNodeAcknowledge',
+  'org.thingsboard.rule.engine.flow.TbCheckpointNode': 'ruleNodeCheckpoint',
   'org.thingsboard.rule.engine.math.TbMathNode': 'ruleNodeMath',
   'org.thingsboard.rule.engine.rest.TbSendRestApiCallReplyNode': 'ruleNodeRestCallReply',
+  'org.thingsboard.rule.engine.notification.TbNotificationNode': 'ruleNodeSendNotification',
+  'org.thingsboard.rule.engine.notification.TbSlackNode': 'ruleNodeSendSlack',
 };
 
 export function getRuleNodeHelpLink(component: RuleNodeComponentDescriptor): string {