Neslisah Demirci wrote: > First I started conversation between two person ; > > > sql: 'INSERT INTO "XXXXX" ("id","customer","createdAt","updatedAt","CompanyId") VALUES (DEFAULT,\'905322653555\',\'2017-01-17 19:13:37.751 +00:00\',\'2017-01-17 19:13:37.751 +00:00\',\'1\') RETURNING *;' }, > > > name: 'error', length: 274, severity: 'ERROR', code: '40001', detail: 'Reason code: Canceled on identification as a pivot, during write.', hint: 'The transaction might succeed if retried.', position: undefined, internalPosition: undefined, internalQuery: undefined, where: undefined, schema: undefined, table: undefined, column: undefined, dataType: undefined, constraint: undefined, file: 'predicate.c', line: '4605', routine: 'OnConflict_CheckForSerializationFailure', > > > > Secondly ; i inserted messages as below; > > > Begin; > > 'INSERT INTO "YYYYY" ("id","body","from","to","state","data","xId","createdAt","updatedAt","CompanyId","MessageTypeId","ConvId") VALUES (DEFAULT,\'messagetext\',\'905309788255\',\'905309788200\',\'customer\',NULL,\'463DA712296218E0D4\',\'2017-01-17 06:43:19.228 +00:00\',\'2017-01-17 06:43:19.228 +00:00\',\'1\',1,23286) RETURNING *;' > > commit; Are there triggers or foreign keys in these tables? -- Álvaro Herrera https://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general