Multiple File uploads may be required where the return information exceeds the maximum allowable file size. The maximum file size permitted for the purpose of ISBAR reporting is 80MB compressed (which may equate to between 200,000 and 300,000 records). There are two options available in this instance, demonstrated by the following example. The Central Bank recommends the adoption of Option 1 in such instances:
Option 1 – Upload all multiple files to be processed together
The institution should apply the actual date of upload to one of their files and each subsequent file should include a different date in the past.
Institution C12345’s BAR data spans 5 zip files. C12345 is uploading their files on 12 March 2023.
To upload all 5 files to ONR C12345 must name each file as follows (please note T Minus number of days is for illustrative purposes only):
- File 1 – C12345_20230312_BAR.zip = Date of upload (T)
- File 2 – C12345_20230311_BAR.zip = Date of upload (T MINUS 1 DAY)
- File 3 – C12345_20230310_BAR.zip = Date of upload (T MINUS 2 DAYS)
- File 4 – C12345_20230309_BAR.zip = Date of upload (T MINUS 3 DAYS)
- File 5 – C12345_20230308_BAR.zip = Date of upload (T MINUS 4 DAYS)
The institution will upload the first file as per steps 2.1-2.3 outlined in the Return Completion Guidance. While the first file is processing, the institution can repeat steps 2.1 – 2.3 for each subsequent file. All files will be processed sequentially.
Option 2 – Upload files to be processed one at a time
Institutions can upload the relevant number of files with the same file name per steps 2.1 – 2.4 of the Return Completion Guidance, however, in this instance, each file must be fully processed before loading the next file. An indicative processing time for each 80MB compressed file is 30 to 60 minutes, but this may vary.