Token-2022TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb
ExtensionTypeMismatch
“Extension type does not match already existing extensions”
You tried to add a mint extension to a token account, or a token account extension to a mint.
Common causes
- Mixing mint-only extensions (transfer fee config, metadata pointer, permanent delegate) with account-only extensions (immutable owner, memo transfer, CPI guard).
How to fix it
- Check which extensions belong on a mint vs a token account and initialise each on the correct account type.