From 1fff7f29e7838aa568265aaebc88fd3b0116d5e0 Mon Sep 17 00:00:00 2001
From: PastaPastaPasta <6443210+PastaPastaPasta@users.noreply.github.com>
Date: Wed, 8 Apr 2026 09:34:07 -0500
Subject: [PATCH] fix(dpp): block pre-programmed distribution changes on token
 update

---
 .../validate_token_configuration_update/v0/mod.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/packages/rs-dpp/src/data_contract/associated_token/token_configuration/methods/validate_token_configuration_update/v0/mod.rs b/packages/rs-dpp/src/data_contract/associated_token/token_configuration/methods/validate_token_configuration_update/v0/mod.rs
index a8e8b55ba31..ccfb7265b98 100644
--- a/packages/rs-dpp/src/data_contract/associated_token/token_configuration/methods/validate_token_configuration_update/v0/mod.rs
+++ b/packages/rs-dpp/src/data_contract/associated_token/token_configuration/methods/validate_token_configuration_update/v0/mod.rs
@@ -256,6 +256,21 @@ impl TokenConfiguration {
             }
         }
 
+        // Check immutable fields: pre_programmed_distribution
+        if old.distribution_rules.pre_programmed_distribution()
+            != new.distribution_rules.pre_programmed_distribution()
+        {
+            return SimpleConsensusValidationResult::new_with_error(
+                DataContractTokenConfigurationUpdateError::new(
+                    "update".to_string(),
+                    "preProgrammedDistribution".to_string(),
+                    self.clone(),
+                    new_config.clone(),
+                )
+                .into(),
+            );
+        }
+
         // Check changes to manual_minting_rules
         #[allow(clippy::collapsible_if)]
         if old.manual_minting_rules != new.manual_minting_rules {