Error codes / Anchor framework
ConstraintMut
Anchor framework · Custom(2000) · 0x7d0
custom program error: 0x7d0
What it means
An account expected to be mutable was passed read-only.
What to do
Mark the account writable in the client (isWritable: true).
Have the transaction that failed with this?
Paste its signature. TxWhy shows the exact instruction and inner call that raised the error, and rebuilds the transaction when the cause is one it can fix (compute limit, expired blockhash, priority fee, stale swap quote).