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*Details: File format summary



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Name ISDOC Information System Document
Version 5.x
Other names  
Identifiers PUID:  fmt/1567
Classification Text (Mark-up)
Description ISDOC is a type of Extensible Markup Language (XML) file format specific for transfer of financial documents. It allows paperless exchanging of invoices and other documents, processing and portability among companies, public administration authorities and individuals. It was defined by “A Working group for Electronic Standards of data exchanging” in ICT Union (formerly SPIS). The “Declaration on common approach in the area of electronic invoicing in the Czech Republic” was signed on 16th October 2008. It represents a Czech customization of UBL standard ISDOC file enables enveloped signatures including advanced IETF/W3C XML digital signatures conforming to the ETSI XAdES specification. This signiture records a general ISDOC file format, however there are several versions of this format which can be found here:
Byte order  
Related file formats Has lower priority than ISDOCX Information System Document (5.x)
Has lower priority than ISDOC Information System Document (6.0.1)
Has priority over Extensible Markup Language (1.0)
Is previous version of ISDOC Information System Document (6.0.1)
Is subtype of ISDOCX Information System Document (5.x)
Technical Environment  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source The National Archives of the Czech Republic / The National Archives of the Czech Republic
Source date 06 Dec 2021
Source description 11/2023 (v.115)- Max-offset modified for BOF signature to allow for more exact signature identification. Removed '(Generic)' from file format name to reflect version number. Internally researched
Last updated 14 Nov 2023
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