Two transactions tried to modify the same object at once.
This transaction should be resubmitted.
Instance attributes: oid : string the OID (8-byte packed string) of the object in conflict class_name : string the fully-qualified name of that object's class message : string a human-readable explanation of the error serials : (string, string) a pair of 8-byte packed strings; these are the serial numbers related to conflict. The first is the revision of object that is in conflict, the currently committed serial. The second is the revision the current transaction read when it started. data : string The database record that failed to commit, used to put the class name in the error message.
The caller should pass either object or oid as a keyword argument, but not both of them. If object is passed, it should be a persistent object with an _p_oid attribute.
There are no attributes in this class.