Field help (DFDTYP) 

The deferred depreciation type can only be specified for the current fiscal year of the Accounting and fiscal context, provided the Fiscal and Minimum depreciation plans are defined.

For Spanish legislation companies:
The following deferred depreciation type: 2013 2014 deferred can be specified on these FYs for the Accounting and fiscalcontext. It is used to limit the fiscal charge to 70% of its value calculated without deferred depreciation. Beyond this limitation, the fiscal depreciation is deferred. This deferred depreciation is reversed on the fiscal years posterior to 2014 up to a maximum of 10 years.
The Deferred rule is automatically loaded with the Percentage value and the Deferred rate with the '30,00' value.