# X_ENTITY_APPEND_ONLY

## Means

an append-only entity was asked to rewrite or remove a row

## Typical cause

the call would rewrite or remove a stored row, and the entity is declared appendOnly: true

## Fix

`repo.insert(row)` — append the correction as a new row, or remove appendOnly: true from the entity and run x db gen

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