Errors/Chain errors
TooManyHolds
A chain-side capacity limit was hit; reduce the size or count of the request
The account already carries the maximum number of balance holds, one per hold reason variant. Check the account's Holds entry; an existing hold must be released before a new reason can place another.
Declared by the Balances pallet; it classifies to the semantic code limit_exceeded.
Remediation
A chain-side capacity limit was hit; reduce the size or count of the request
The same explanation is available in the terminal: btcli explain TooManyHolds.