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.. _ref-exceptions:
.. module:: trytond.exceptions
Exceptions
==========
.. exception:: TrytonException
The base class for all Tryton exceptions.
.. exception:: UserError(message[, description[, domain]])
The base class for exceptions used to display an error message to users.
The domain may be a 2-tuple containing a :ref:`domain <topics-domain>` and a
dictionary of field definitions used to format the domain and append to the
description.
.. exception:: UserWarning(name, message[, description])
The base class for exceptions used to display a warning message to users.
.. exception:: LoginExceptions(name, message[, type])
The exception used to request ``name`` parameter for the login process.
.. exception:: ConcurrencyException(message)
The exception raised on concurrent modification.
.. exception:: RateLimitException
The exception raised when user has sent too many login requests.
.. exception:: MissingDependenciesException(missings)
The exception raised when modules are missing.
.. module:: trytond.model.exceptions
.. exception:: AccessError
The exception raised when trying to access a record without the rights.
.. exception:: AccessButtonError
The exception raised when trying to execute a button without the rights.
.. exception:: ButtonActionException
The exception raised to launch the ``action`` instead of executing the
button method.
The ``value`` attribute is the action value returned.
.. exception:: ImportDataError
The exception raises when importing data fails.
.. exception:: ValidationError
The base class for all record validation error.
.. exception:: DomainValidationError
The exception raised when the domain of a field is not valid.
.. exception:: RequiredValidationError
The exception raised when a required field is empty.
.. exception:: SizeValidationError
The exception raised when the size of a field is too big.
.. exception:: DigitsValidationError
The exception raised when the value of a field does not respect its digits.
.. exception:: SelectionValidationError
The exception raised when the value is not in the selection.
.. exception:: TimeFormatValidationError
The exception raised when the time format of a field is not respected.
.. exception:: ForeignKeyError
The exception raised when a foreign key is not respected.
.. exception:: SQLConstraintError
The exception raised when a :attr:`~trytond.model.ModelSQL._sql_constraints`
is not respected.
.. exception:: RecursionError
The exception raised by :class:`~trytond.model.TreeMixin.check_recursion`.
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