diff --git a/api/src/main/java/org/apache/cloudstack/api/BaseUpdateTemplateOrIsoCmd.java b/api/src/main/java/org/apache/cloudstack/api/BaseUpdateTemplateOrIsoCmd.java
index 38cf765dd1aa..696a500860e3 100644
--- a/api/src/main/java/org/apache/cloudstack/api/BaseUpdateTemplateOrIsoCmd.java
+++ b/api/src/main/java/org/apache/cloudstack/api/BaseUpdateTemplateOrIsoCmd.java
@@ -42,7 +42,7 @@ public abstract class BaseUpdateTemplateOrIsoCmd extends BaseCmd {
     @Parameter(name = ApiConstants.ID, type = CommandType.UUID, entityType = TemplateResponse.class, required = true, description = "The ID of the image file")
     private Long id;
 
-    @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, description = "The name of the image file")
+    @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, length = 251, description = "The name of the image file")
     private String templateName;
 
     @Parameter(name = ApiConstants.OS_TYPE_ID,
diff --git a/api/src/main/java/org/apache/cloudstack/api/command/user/iso/RegisterIsoCmd.java b/api/src/main/java/org/apache/cloudstack/api/command/user/iso/RegisterIsoCmd.java
index f499c01ce582..2de0f96f2716 100644
--- a/api/src/main/java/org/apache/cloudstack/api/command/user/iso/RegisterIsoCmd.java
+++ b/api/src/main/java/org/apache/cloudstack/api/command/user/iso/RegisterIsoCmd.java
@@ -70,7 +70,7 @@ public class RegisterIsoCmd extends BaseCmd implements UserCmd {
     @Parameter(name = ApiConstants.IS_EXTRACTABLE, type = CommandType.BOOLEAN, description = "True if the ISO or its derivatives are extractable; default is false")
     private Boolean extractable;
 
-    @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, required = true, description = "The name of the ISO")
+    @Parameter(name = ApiConstants.NAME, type = CommandType.STRING, required = true, length = 251, description = "The name of the ISO")
     private String isoName;
 
     @Parameter(name = ApiConstants.OS_TYPE_ID,