Message in Spanish (Español)
No se espera el tipo '<var>Type Name</var>' con el nombre de contrato de datos '<var>X</var>:<var>Y</var>'. Agregue los tipos no conocidos estáticamente a la lista de tipos conocidos (por ejemplo, usando el atributo KnownTypeAttribute o agregándolos a la lista de tipos conocidos que se pasa a DataContractSerializer).
Unlocalized message
Type '<var>Type Name</var>' with data contract name '<var>X</var>:<var>Y</var>' is not expected. Consider using a DataContractResolver or add any types not known statically to the list of known types - for example, by using the KnownTypeAttribute attribute or by adding them to the list of known types passed to DataContractSerializer.
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