# MsgSetCustomData

**Disclaimer:**\
This message is a streamlined alternative to [MsgUpdateCollection](/token-standard/messages/msg-update-collection.md). If you need to update many fields at once, we recommend using MsgUpdateCollection instead.

## MsgSetCustomData

Sets the custom data and update permissions for a collection. This is a convenience message that focuses specifically on custom data management.

### Overview

This message allows you to:

* Set custom data for the collection
* Configure permissions to update the custom data in the future

### Authorization & Permissions

Updates can only be performed by the **current manager** of the collection. The manager must have permission to update the custom data according to the collection's current permission settings.

### Proto Definition

```protobuf
message MsgSetCustomData {
  option (cosmos.msg.v1.signer) = "creator";
  option (amino.name) = "tokenization/SetCustomData";

  // Address of the creator.
  string creator = 1;

  // ID of the collection.
  string collectionId = 2 [(gogoproto.customtype) = "Uint", (gogoproto.nullable) = false];

  // New custom data to set.
  string customData = 3;

  // Permission to update custom data
  repeated ActionPermission canUpdateCustomData = 4;
}

message MsgSetCustomDataResponse {
  // ID of the collection.
  string collectionId = 1 [(gogoproto.customtype) = "Uint", (gogoproto.nullable) = false];
}
```

### Usage Example

```bash
# CLI command
bitbadgeschaind tx tokenization set-custom-data '[tx-json]' --from manager-key
```

#### JSON Example

```json
{
    "creator": "bb1abc123...",
    "collectionId": "1",
    "customData": "{\"description\": \"My custom data\", \"version\": \"1.0\"}",
    "canUpdateCustomData": [
        {
            "permanentlyPermittedTimes": [{ "start": "1000", "end": "2000" }],
            "permanentlyForbiddenTimes": []
        }
    ]
}
```

### Related Messages

* [MsgUniversalUpdateCollection](/token-standard/messages/msg-universal-update-collection.md) - Full collection update with all fields
* [MsgUpdateCollection](/token-standard/messages/msg-update-collection.md) - Legacy update message


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