diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/CustomValidationExceptionWithReasonDecorator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/CustomValidationExceptionWithReasonDecorator.kt
index ad080febbba75e281142ea997a053ae5802da448..b7a37f9edec098511bbfd3333edf4d565b6cdf80 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/CustomValidationExceptionWithReasonDecorator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/CustomValidationExceptionWithReasonDecorator.kt
@@ -237,22 +237,27 @@ class ValidationExceptionWithReasonConversionGenerator(private val codegenContex
         }
     }
 
-    override fun builderConstraintViolationImplBlock(constraintViolations: Collection<ConstraintViolation>) =
+    override fun builderConstraintViolationFn(constraintViolations: Collection<ConstraintViolation>) =
         writable {
-            rustBlock("match self") {
-                constraintViolations.forEach {
-                    if (it.hasInner()) {
-                        rust("""ConstraintViolation::${it.name()}(inner) => inner.as_validation_exception_field(path + "/${it.forMember.memberName}"),""")
-                    } else {
-                        rust(
-                            """
-                            ConstraintViolation::${it.name()} => crate::model::ValidationExceptionField {
-                                message: format!("Value at '{}/${it.forMember.memberName}' failed to satisfy constraint: Member must not be null", path),
-                                name: path + "/${it.forMember.memberName}",
-                                reason: crate::model::ValidationExceptionFieldReason::Other,
-                            },
-                            """,
-                        )
+            rustBlockTemplate(
+                "pub(crate) fn as_validation_exception_field(self, path: #{String}) -> crate::model::ValidationExceptionField",
+                "String" to RuntimeType.String,
+            ) {
+                rustBlock("match self") {
+                    constraintViolations.forEach {
+                        if (it.hasInner()) {
+                            rust("""ConstraintViolation::${it.name()}(inner) => inner.as_validation_exception_field(path + "/${it.forMember.memberName}"),""")
+                        } else {
+                            rust(
+                                """
+                                ConstraintViolation::${it.name()} => crate::model::ValidationExceptionField {
+                                    message: format!("Value at '{}/${it.forMember.memberName}' failed to satisfy constraint: Member must not be null", path),
+                                    name: path + "/${it.forMember.memberName}",
+                                    reason: crate::model::ValidationExceptionFieldReason::Other,
+                                },
+                                """,
+                            )
+                        }
                     }
                 }
             }
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/SmithyValidationExceptionDecorator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/SmithyValidationExceptionDecorator.kt
index 255099601c935ba0ae7a4475a4ffa4a005c00c48..061787f68fbe258d2da6a63314d2a00d7c504618 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/SmithyValidationExceptionDecorator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/customizations/SmithyValidationExceptionDecorator.kt
@@ -190,21 +190,26 @@ class SmithyValidationExceptionConversionGenerator(private val codegenContext: S
             )
         }
 
-    override fun builderConstraintViolationImplBlock(constraintViolations: Collection<ConstraintViolation>) =
+    override fun builderConstraintViolationFn(constraintViolations: Collection<ConstraintViolation>) =
         writable {
-            rustBlock("match self") {
-                constraintViolations.forEach {
-                    if (it.hasInner()) {
-                        rust("""ConstraintViolation::${it.name()}(inner) => inner.as_validation_exception_field(path + "/${it.forMember.memberName}"),""")
-                    } else {
-                        rust(
-                            """
-                            ConstraintViolation::${it.name()} => crate::model::ValidationExceptionField {
-                                message: format!("Value at '{}/${it.forMember.memberName}' failed to satisfy constraint: Member must not be null", path),
-                                path: path + "/${it.forMember.memberName}",
-                            },
-                            """,
-                        )
+            rustBlockTemplate(
+                "pub(crate) fn as_validation_exception_field(self, path: #{String}) -> crate::model::ValidationExceptionField",
+                "String" to RuntimeType.String,
+            ) {
+                rustBlock("match self") {
+                    constraintViolations.forEach {
+                        if (it.hasInner()) {
+                            rust("""ConstraintViolation::${it.name()}(inner) => inner.as_validation_exception_field(path + "/${it.forMember.memberName}"),""")
+                        } else {
+                            rust(
+                                """
+                                ConstraintViolation::${it.name()} => crate::model::ValidationExceptionField {
+                                    message: format!("Value at '{}/${it.forMember.memberName}' failed to satisfy constraint: Member must not be null", path),
+                                    path: path + "/${it.forMember.memberName}",
+                                },
+                                """,
+                            )
+                        }
                     }
                 }
             }
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderConstraintViolations.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderConstraintViolations.kt
index 3e9595ca638dfb75bd338760deb253eae6869065..524fad42553bd0ef92a4f01a49fbbf43612a5cda 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderConstraintViolations.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ServerBuilderConstraintViolations.kt
@@ -171,12 +171,10 @@ class ServerBuilderConstraintViolations(
         writer.rustTemplate(
             """
             impl ConstraintViolation {
-                pub(crate) fn as_validation_exception_field(self, path: #{String}) -> crate::model::ValidationExceptionField {
-                    #{ValidationExceptionFieldWritable:W}
-                }
+                #{ValidationExceptionFnWritable:W}
             }
             """,
-            "ValidationExceptionFieldWritable" to validationExceptionConversionGenerator.builderConstraintViolationImplBlock((all)),
+            "ValidationExceptionFnWritable" to validationExceptionConversionGenerator.builderConstraintViolationFn((all)),
             "String" to RuntimeType.String,
         )
     }
diff --git a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ValidationExceptionConversionGenerator.kt b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ValidationExceptionConversionGenerator.kt
index b43af2a1fde03d29431f29e23e45321dcdf8a6b8..8e85b6dfd99c64caba8211a6df6562432065722d 100644
--- a/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ValidationExceptionConversionGenerator.kt
+++ b/codegen-server/src/main/kotlin/software/amazon/smithy/rust/codegen/server/smithy/generators/ValidationExceptionConversionGenerator.kt
@@ -47,7 +47,7 @@ interface ValidationExceptionConversionGenerator {
         model: Model,
     ): Writable
 
-    fun builderConstraintViolationImplBlock(constraintViolations: Collection<ConstraintViolation>): Writable
+    fun builderConstraintViolationFn(constraintViolations: Collection<ConstraintViolation>): Writable
 
     fun collectionShapeConstraintViolationImplBlock(
         collectionConstraintsInfo: Collection<CollectionTraitInfo>,