The addition item in the Smithing Transform Recipe is hardcoded to only allow minecraft:netherite_ingot, despite the fact that addons can define custom items with the minecraft:transform_materials tag.

Hello and thank you for your report!
Could you provide us with a reproduction steps that we can use to reproduce this issue?
This will help us in evaluating this bug!

Steps to Reproduce

1. Create a custom item with minecraft:transform_materials tag

   • Save the following as test_item.json in /behavior_packs/your_addon/items/:

   {
     "format_version": "1.20.80",
     "minecraft:item": {
       "components": {
         "minecraft:icon": {
           "textures": {
             "default": "apple"
           }
         },
         "minecraft:tags": {
           "tags": [
             "minecraft:transform_materials"
           ]
         }
       },
       "description": {
         "identifier": "testaddon:test",
         "menu_category": {
           "category": "items",
           "group": "itemGroup.name.items"
         }
       }
     }
   }

2. Create a Smithing Transform Recipe using the custom item

   • Save this as test_smithing.json in /behavior_packs/your_addon/recipes/:

   {
   	"format_version": "1.12",
   	"minecraft:recipe_smithing_transform": {
   	 "description": {
   	   "identifier": "testaddon:test_smithing_table_recipe1"
   	  },
   	 
   	 "tags": [ "smithing_table" ],
   	 
   	  "template": "minecraft:netherite_upgrade_smithing_template",
   	  "base": "minecraft:diamond_axe",
   	  "addition": "testaddon:test",
   	  "result": "minecraft:netherite_axe"
   	}
   }

3. Load the addon in Minecraft: Bedrock Edition

   • Use /give @s test:test

   • Try placing testaddon:test in the Smithing Table as addition.

Expected Behavior

• Any item with minecraft:transform_materials should be valid as addition.

Actual Behavior

• Only minecraft:netherite_ingot is accepted, despite the documentation stating the tag should be used.

Issue

• The check hardcodes netherite_ingot instead of using the tag, making transform_materials meaningless for addons.

• This restriction serves no purpose and should be removed to allow proper addon support.

Hi!

Can you please record and upload a video showcasing the issue with visible appropriate repro steps?

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