X_DB_FOREIGN_KEY_VIOLATION
Means
a foreign key constraint rejected the row
Typical cause
SQLSTATE 23503 — the parent row is absent, was deleted between the read and the write, or belongs to another tenant (a same-tenant key answers absent and foreign alike, and the memory driver refuses only the second). meta.constraint names the key
Fix
insert the row the constraint cause names points at first, in the same withTransaction(...) — or drop the write, because the parent it names is gone or is not this tenant's