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COREP TEMPLATES TO XBRL MAPPER

• Fernando Wagener
• fernando.wagener_at_bde.es
• Bank of Spain

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Why develop a mapper with Excel VB?

• Concept
• Its a low cost tool which converts COREP
  Templates written in Excel into an XBRL instance
• It has been developed in Excel using VBA
• Its not a latest technology, but its a useful
  solution
• The file with the corep templates should be
  generated with the coreptest.xlt tool, a data
  entry facility available in the corep webpage
• Its an appropriate environment because the data
  source is in Excel format

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Why develop a mapper with Excel VB? (II)

• Benefits
• Easy to use
• Very user friendly
• Efficient, reliable and useful for testing
  instances
• Fast, good for intensive testing
• Easy to understand its internal operation
• The code can be followed perfectly by people who
  program Excel macros
• Autonomous the taxonomy is included in the Excel
  file
• It doesnt need to have the taxonomy files
  available
• It doesnt have links to external information or
  databases
• No Internet connection required
• Its not an on-line tool once the file has been
  downloaded, you dont need to be connected to the
  Internet.
• Open code
• You simply need the Microsoft Excel application
  to see or edit the code.

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How to use (I)

• Download converttoxbrl.xls
• from www.corep.info

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How to use (II)

1. Open converttoxbrl.xls if the file is opened
   directly from the Webpage, it will not work
   properly. It must be downloaded.
2. 3. Open the corep file the Find file button can
   be used to open the file with the COREP templates
3. 4. Select the corep file once opened, the file
   must be selected from the scroll-down box.

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How to use (III)

• Press Generate XBRL
• The xbrl instance will be generated in the same
  folder as the corep file
• You can also see the results in the Output sheet

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How it works (I)

• The internal operation is divided into two
  phases
• I) The generation of the Output sheet with all
  data required
• II) The generation of the XBRL instance from the
  Output sheet

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How it works (II)

• I) The generation of the Output sheet with all
  data required
• Its the most difficult step because the corep
  templates are very irregular.
• The tool must know several parameters about the
  templates.
• The cells with data must have their dimensions
  perfectly defined
• The tool runs throughout all the templates
  looking for cells with values.
• When it founds a cell with an item, it identifies
  the dimension depending on the column and the row
  where it is located.z

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How it works (III)

• Information about the Corep Templates in the
  Templates sheet

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How it works (IV)

• Information about the Corep Templates in
  Templates sheet Areas

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How it works (V)

• Information about the dimensions automatically
  imported into Dim and PriDim sheets

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How it works (VI)

• Output sheet

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How it works (VII)

• II) The generation of the XBRL instance from the
  Output sheet
• It only takes the information included in the
  Output sheet and exports it in XBRL format

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• FERNANDO WAGENER - fernando.wagener_at_bde.es
• THANK YOU FOR YOUR ATTENTION