Trying to join pool returns 500 while delegation next = not_delegating

[piotr-iohk]

Context

While delegation next = not_delegating one doesn't seem to be able to join pool.

Information	-
Version	2020.6.5 (git revision: bcc0ff009b4695589c107fdf21272a470b2362c0)
Platform	Linux, all?
Installation	From source

Steps to Reproduce

https://hydra.iohk.io/job/Cardano/iohk-nix/cardano-deployment/latest/download/1/index.html

cardano-node run \
        --config /root/node/$type/*-config.json \
        --database-path /root/node/$type/db \
        --socket-path /root/node/$type/node.socket \
        --topology /root/node/$type/*-topology.json \
        --host-addr 127.0.0.1 \
        --port 3001}

cardano-wallet-shelley serve --port 8090 \
                --node-socket /root/node/$type/node.socket \
                --testnet /root/node/$type/*-genesis.json \
                --database /root/wallet/$type/db

3. Have a wallet with funds.
4. Delegate to a pool.
5. delegation next = pool
6. In the same epoch, you just delegated - quit pool.
7. delegation next = not_delegating
8. Now try to delegate again to some pool

Expected behavior

I should be able to join.

Actual behavior

PUT http://localhost:8090/v2/stake-pools/055b27232c00f2de578084a187fc3e09e940d8efa5abe04cb8ed7d5a/wallets/51bf08657462be2da50d079ec0e831c744eb0463
Body: {"passphrase":"Secure Passphrase"}

The response was:
Code = 500,
Message = {"code":"created_invalid_transaction","message":"That's embarrassing. It looks like I've created an invalid transaction that could not be parsed by the node. Here's an error message that may help with debugging: ApplyTxError [LedgerFailure (DelegsFailure (DelplFailure (DelegFailure (StakeDelegationImpossibleDELEG (KeyHashObj (KeyHash e16472c178b892c809ce3d1d5b5cc3d810ace0d3194d97622eb8b698))))))]"}

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Resolution

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QA

[piotr-iohk]

This is no longer observed. Probably fixed opportunistically.