# X_MIGRATION_CONCURRENT_IN_TRANSACTION

## Means

a concurrent index statement is in a migration that runs inside a transaction

## Typical cause

a hand-written migration holds `create index concurrently`, `drop index concurrently` or `reindex … concurrently` but no `-- transaction: false` line, and Postgres refuses all three inside a transaction block (25001). Refused before the transaction opens, so nothing is applied

## Fix

`sed -i '1i -- transaction: false' packages/db/migrations/<id>.sql` — before it is applied — or move the statement into a migration of its own

[Entity and database](/error-codes#entity-and-database)