---
title: TKTLVTag
framework: cryptotokenkit
role: symbol
role_heading: Type Alias
path: cryptotokenkit/tktlvtag
---

# TKTLVTag

The type used to identify TLV format tags.

## Declaration

```swift
typealias TKTLVTag = UInt64
```

## Discussion

Discussion Although some encodings tags do not have any size restrictions, the CryptoTokenKit framework supports tag lengths only up to 64-bits.

## See Also

### Creating TLV Records

- [init(tag:value:)](cryptotokenkit/tkbertlvrecord/init(tag:value:).md)
- [init(tag:records:)](cryptotokenkit/tkbertlvrecord/init(tag:records:).md)