2. COREP TEMPLATES TO XBRL MAPPER
Fernando Wagener
Bank of Spain

3. Why develop a mapper with Excel VB?
Concept
It’s a low cost tool which converts COREP Templates written in Excel into an XBRL instance
It has been developed in Excel using VBA
It’s not a latest technology, but it’s 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
It’s an appropriate environment because the data source is in Excel format

4. 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 doesn’t need to have the taxonomy files available
It doesn’t have links to external information or databases
No Internet connection required
It’s not an on-line tool: once the file has been downloaded, you don’t need to be connected to the Internet.
Open code
You simply need the Microsoft Excel application to see or edit the code.

5. How to use (I)
Download converttoxbrl.xls
from

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

7. You can also see the results in the Output sheet
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

8. How it works (I) Phase II Phase 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
Phase II
Phase I

9. I) The generation of the Output sheet with all data required
How it works (II)
I) The generation of the Output sheet with all data required
It’s 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

10. How it works (III)
Information about the Corep Templates in the Templates sheet

11. How it works (IV)
Information about the Corep Templates in Templates sheet: Areas

12. How it works (V)
Information about the dimensions: automatically imported into Dim and PriDim sheets

13. How it works (VI)
Output sheet

14. II) The generation of the XBRL instance from the Output sheet
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
Phase II
Phase I

15. THANK YOU FOR YOUR ATTENTION
FERNANDO WAGENER -
THANK YOU FOR YOUR ATTENTION