Error using BoundedVec for Pallet Storage, says many traits are not implemented for `BoundedVec<snip>`

Question

Here's a snip from my file showing the relevant stuff:

#[pallet::config]
pub trait Config: frame_system::Config {
    /// The ID type for freezes.
    type FreezeIdentifier: Parameter + Member + MaxEncodedLen + Copy;
    /// The maximum number of individual freeze locks that can exist on an account at any 
    time.
    #[pallet::constant]
    type MaxFreezes: Get<u32>;
}
#[pallet::storage]
pub type Freezes<T: Config> = StorageMap<
    _,
    Blake2_128Concat,
    T::AccountId,
    BoundedVec<IdAmount<T::FreezeIdentifier, T::NativeBalance>, T::MaxFreezes>,
    ValueQuery,
>;

It's giving me a ton of errors all with the same format, just for different traits such as Encode and Decode:

error[E0277]: the trait bound `BoundedVec<IdAmount<<T as pallet::Config>::FreezeIdentifier, <T as pallet::Config>::NativeBalance>, <T as pallet::Config>::MaxFreezes>: parity_scale_codec::Decode` is not satisfied
   --> pallets/bullposting/src/lib.rs:48:15
    |
48  |       #[pallet::pallet]
    |  _______________^
49  | |     pub struct Pallet<T>(_);
50  | |
51  | |     /// The pallet's configuration trait.
...   |
133 | |     #[pallet::storage]
134 | |     pub type Freezes<T: Config> = StorageMap<
    | |____________________^ the trait `parity_scale_codec::Decode` is not implemented for `BoundedVec<IdAmount<<T as pallet::Config>::FreezeIdentifier, <T as pallet::Config>::NativeBalance>, <T as pallet::Config>::MaxFreezes>`, which is required by `frame_support::pallet_prelude::StorageMap<_GeneratedPrefixForStorageFreezes<T>, frame_support::Blake2_128Concat, <T as frame_system::Config>::AccountId, BoundedVec<IdAmount<<T as pallet::Config>::FreezeIdentifier, <T as pallet::Config>::NativeBalance>, <T as pallet::Config>::MaxFreezes>, frame_support::pallet_prelude::ValueQuery>: StorageInfoTrait`
    |
    = note: required for `BoundedVec<IdAmount<<T as pallet::Config>::FreezeIdentifier, <T as pallet::Config>::NativeBalance>, <T as pallet::Config>::MaxFreezes>` to implement `FullCodec`
    = note: required for `StorageMap<_GeneratedPrefixForStorageFreezes<T>, Blake2_128Concat, <T as Config>::AccountId, BoundedVec<..., ...>, ...>` to implement `StorageInfoTrait`
    = note: the full name for the type has been written to '/home/tgang/rust/BullChain/target/debug/deps/pallet_bullposting-a4d011cb0bb97c3a.long-type-9057226278347970660.txt'
    = note: consider using `--verbose` to print the full type name to the console
help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
    |
48  |     #[pallet::pallet where BoundedVec<IdAmount<<T as pallet::Config>::FreezeIdentifier, <T as pallet::Config>::NativeBalance>, <T as pallet::Config>::MaxFreezes>: parity_scale_codec::Decode]
    |                      ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

I've found a few other questions along these lines but the fix for both was using Get<u32> instead of Get<u16>, but I'm already using Get<u32>. I copied my code from the Balances pallet.

Answer 1

These default-features should be false.

https://github.com/Yung-Beef/BullChain/blob/8f3ad89d3daa6901c380a96af284bd4dea67e083/pallets/bullposting/Cargo.toml#L25-L26

Those features should only be enabled in std.

Add sp-io/std, pallet-balances/std to the std feature scope.

---

I just noticed that you are using different versions of dependencies.

You should ensure all dependencies are on the same version.

For example, pallet-balances depends on [email protected], while frame-support depends on [email protected]. The macro from frame-support will assume that you haven't implemented those traits.

You can also check https://github.com/paritytech/psvm.