Error codes / Anchor framework
ConstraintSpace
Anchor framework · Custom(2019) · 0x7e3
custom program error: 0x7e3
What it means
The account's size does not match the constraint.
What to do
Create the account with the exact space the program declares.
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).