General
Each message described in this section is an XML message conforming to the XML Schema in Appendix: Message XML Schema. A list of the fields used and the format can be found in 'Appendix: Data dictionary'. The IDs used in the messages are explained in 'Appendix: IDs' in the 'iDEAL_010 Standards' document.
The following conventions are used to indicate whether a message element is mandatory:
- Yes: The element must occur exactly once.
- No: The element may not occur, or it must occur exactly once.
- Yes (1..∞): The element must occur one or more (unlimited) times.
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Character set
- In all iDEAL messages the Unicode character set must be used. Only the MES-2 subset must be supported.
- Encoding must be used as indicated in the HTTP and XML headers UTF-8 (Unicode Transformation Format).
- The Byte Order Mark (BOM) must not be used. The UTF-8 representation of the BOM is the byte sequence 0xEF,0xBB,0xBFs.
Conventions for empty fields
In iDEAL an An XML tag for an optional or conditional field is either:
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All messages must be validated against the iDEAL provided XML Schema. The schema also references the XML Digital Signature Schema which must be used to validate the Signature element. The XML Digital Signature Schema is available from W3C at the following URL: http://www.w3.org/2000/09/xmldsig#. If additional validation of specific fields is required, it is indicated in the field specification.
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