Seaquel
SQLite error code

SQLITE_CONSTRAINT_FOREIGNKEY

SQLITE_CONSTRAINT_FOREIGNKEY is SQLite result code 787, an extended code of SQLITE_CONSTRAINT.

Result code787
NameSQLITE_CONSTRAINT_FOREIGNKEY
Primary codeSQLITE_CONSTRAINT

What it means

The SQLITE_CONSTRAINT_FOREIGNKEY error code is an extended error code for SQLITE_CONSTRAINT indicating that a foreign key constraint failed.

Source: SQLite Result and Error Codes