diff --git a/extensions/arc/package.json b/extensions/arc/package.json
index 4f66ec1a61..d1f114fd49 100644
--- a/extensions/arc/package.json
+++ b/extensions/arc/package.json
@@ -578,7 +578,10 @@
                           "type": "text",
                           "defaultValue": "sqlinstance1",
                           "required": true,
-                          "labelWidth": "100%"
+                          "labelWidth": "100%",
+                          "textValidationRequired": true,
+                          "textValidationRegex": "^[a-z]([-a-z0-9]{0,11}[a-z0-9])?$",
+                          "textValidationDescription": "%arc.sql.invalidinstancename%"
                         },
                         {
                           "label": "%arc.sql.username%",
@@ -722,7 +725,7 @@
                           "variableName": "AZDATA_NB_VAR_POSTGRES_SERVER_GROUP_NAME",
                           "type": "text",
                           "textValidationRequired": true,
-                          "textValidationRegex": "^[a-z]([-a-z0-9]{0,8}[a-z0-9])?$",
+                          "textValidationRegex": "^[a-z]([-a-z0-9]{0,10}[a-z0-9])?$",
                           "textValidationDescription": "%arc.postgres.server.group.name.validation.description%",
                           "required": true
                         },
diff --git a/extensions/arc/package.nls.json b/extensions/arc/package.nls.json
index 128daeae6e..0bbf383807 100644
--- a/extensions/arc/package.nls.json
+++ b/extensions/arc/package.nls.json
@@ -77,6 +77,7 @@
 	"arc.sql.instance.name": "Instance name (lower case letters and digits only)",
 	"arc.sql.username": "Username",
 	"arc.sql.invalidusername": "sa username is disabled, please choose another username",
+	"arc.sql.invalidinstancename": "Instance name must consist of lower case alphanumeric characters or '-', start with a letter, end with an alphanumeric character, and be 13 characters or fewer in length.",
 	"arc.storage-class.dc.label": "Storage Class",
 	"arc.sql.storage-class.dc.description": "The storage class to be used for all data and logs persistent volumes for all data controller pods that require them.",
 	"arc.storage-class.data.label": "Storage Class (Data)",
@@ -106,7 +107,7 @@
 	"arc.postgres.settings.resource.title": "PostgreSQL server group resource settings",
 	"arc.postgres.settings.storage.title": "PostgreSQL server group storage settings",
 	"arc.postgres.server.group.name": "Server group name",
-	"arc.postgres.server.group.name.validation.description": "Server group name must consist of lower case alphanumeric characters or '-', start with a letter, end with an alphanumeric character, and be 10 characters or fewer in length.",
+	"arc.postgres.server.group.name.validation.description": "Server group name must consist of lower case alphanumeric characters or '-', start with a letter, end with an alphanumeric character, and be 12 characters or fewer in length.",
 	"arc.postgres.server.group.workers": "Number of workers",
 	"arc.postgres.server.group.port": "Port",
 	"arc.postgres.server.group.engine.version": "Engine Version",