diff --git a/server-rs/crates/platform-tripo/src/common/validation.rs b/server-rs/crates/platform-tripo/src/common/validation.rs
index 6cb502b0c..b91972bc8 100644
--- a/server-rs/crates/platform-tripo/src/common/validation.rs
+++ b/server-rs/crates/platform-tripo/src/common/validation.rs
@@ -5,6 +5,7 @@ use shared_contracts::model3d::common::{
 use shared_contracts::model3d::image_to_model::Model3dImageToModelParams;
 use shared_contracts::model3d::multiview_to_model::Model3dMultiviewToModelRequest;
 use shared_contracts::model3d::text_to_model::Model3dTextToModelParams;
+use shared_contracts::model3d::wire_str_lossy;
 
 use super::{TripoError, TripoField, TripoTaskHandle, TripoValidationReason};
 
@@ -65,6 +66,18 @@ tripo_generation_options_from! {
     compress,
 }
 
+/// v3.x 家族的模型标签，供「只支持 v3.x」类错误文案复用。
+///
+/// 标签取自契约枚举的 serde 取值（[`wire_str_lossy`]），契约改名后文案跟着变，
+/// 这里不再手写第二份版本字符串。
+fn v3_model_labels() -> String {
+    format!(
+        "{} and {}",
+        wire_str_lossy(&Model3dModelVersion::H31),
+        wire_str_lossy(&Model3dModelVersion::H30)
+    )
+}
+
 pub(crate) fn validate_generation_options(
     options: &TripoGenerationOptions,
 ) -> Result<(), TripoError> {
@@ -74,7 +87,10 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::TextureQuality),
             TripoValidationReason::InvalidCombination,
-            "texture_quality is not supported by v2.5-20250123",
+            &format!(
+                "texture_quality is not supported by {}",
+                wire_str_lossy(&Model3dModelVersion::H25)
+            ),
         ));
     }
 
@@ -85,7 +101,10 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::TextureQuality),
             TripoValidationReason::InvalidCombination,
-            "texture_quality=fast requires texture_version=v3.5-20260815",
+            &format!(
+                "texture_quality=fast requires texture_version={}",
+                wire_str_lossy(&Model3dTextureVersion::V35)
+            ),
         ));
     }
 
@@ -94,7 +113,10 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::GeometryQuality),
             TripoValidationReason::InvalidCombination,
-            "geometry_quality is only supported by v3.1-20260211 and v3.0-20250812",
+            &format!(
+                "geometry_quality is only supported by {}",
+                v3_model_labels()
+            ),
         ));
     }
 
@@ -102,7 +124,7 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::Compress),
             TripoValidationReason::InvalidCombination,
-            "compress is only supported by v3.1-20260211 and v3.0-20250812",
+            &format!("compress is only supported by {}", v3_model_labels()),
         ));
     }
 
@@ -110,7 +132,10 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::AutoSize),
             TripoValidationReason::InvalidCombination,
-            "auto_size is not supported by v2.5-20250123",
+            &format!(
+                "auto_size is not supported by {}",
+                wire_str_lossy(&Model3dModelVersion::H25)
+            ),
         ));
     }
 
@@ -121,7 +146,7 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::SmartLowPoly),
             TripoValidationReason::InvalidCombination,
-            "smart_low_poly is only supported by v3.1-20260211 and v3.0-20250812",
+            &format!("smart_low_poly is only supported by {}", v3_model_labels()),
         ));
     }
 
@@ -132,7 +157,7 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::GenerateParts),
             TripoValidationReason::InvalidCombination,
-            "generate_parts is only supported by v3.1-20260211 and v3.0-20250812",
+            &format!("generate_parts is only supported by {}", v3_model_labels()),
         ));
     }
 
@@ -145,7 +170,10 @@ pub(crate) fn validate_generation_options(
         return Err(invalid(
             Some(TripoField::Quad),
             TripoValidationReason::InvalidCombination,
-            "quad=true is only supported by v3.x models and P2-20260801",
+            &format!(
+                "quad=true is only supported by v3.x models and {}",
+                wire_str_lossy(&Model3dModelVersion::P2)
+            ),
         ));
     }