Public Procurement in Euskadi


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Public Procurement in Euskadi

Usage recommendations

Permitted formats 
Accepted formats:.doc, .xls, .ppt, .pdf, .rtf, .sxw, .abw, .jpg, .bmp, .tiff, .zip y .7z.

Only documents submitted in the specified formats shall be read and processed.
Limitations on file sizes

The maximum size of files that can be submitted depends on the RAM installed in the computer. For guidance purposes, a computer with 2 GB of RAM memory can submit files of up to 15 MB.


Limitations on the size of the files constituting the bids makes it necessary to use a series of basic techniques to prevent excessive or unnecessarily large files. These are basically techniques related to including graphics, because it is unlikely that files containing text and data reach a critical size for submission purposes:


  • Avoid including superfluous graphics.
  • Use formats that decrease the size of graphics (.jpg, .gif).
  • Rationalise the configuration of the number of colours.
  • Include graphics of a size adequate for the surface occupied by the presentation.
  • Use templates that include graphics repeated throughout the document.
  • If catalogues must be submitted, limit their content to that specifically related to the product or service that the administration wishes to contract.
  • In the case of scanned documents, limit scanner resolution (in most cases a resolution of 300 ppp is sufficient) and use formats that reduce size while maintaining adequate resolution, such as, for example, .pdf).
Hard copies attached to a bid

If the dossier so requires or the Procurement Desk gives its express consent, hard copies of any document or content may be submitted as attachments to the electronic bid.
Hard copies should be submitted to the Official Registry of Contractors within the bid submission period. The outside of the envelope will clearly indicate that it contains documentation complementary to an electronic bid, the company name and dossier code

Need to introduce just one file in each envelope section

Depending on the technical and administrative requirements of the tender in question, the Procurement Desk will determine the number of files to submit and what each must contain. The Electronic Tendering System will present a single loading tray for each file requested.

How to generate a single file with several files:

1) If they all have the same format. Merge all the files into a single file.

2) If the files have different formats. Compress the files generated into a single compressed file (the Basque Government's Public Electronic Procurement Model permits the use of .zip and .7z compressed files).

If the bidder requests the files included in compressed format that are to be read and interpreted in a specific order, it must name them in a clear, sequential order.

If the tender dossier has batches, the bidder may only submit the documentation relating to the batches offered, ignoring the message warning that not all possible documentation has been submitted.

Bank guarantees and financial solvency reports from banks

The System is able to receive guarantees and financial solvency reports in digital format. In order for these to be fully valid, the electronic document must have been signed using a recognised electronic signature certificate.

If the dossier requires the submission of provisional guarantees or financial solvency reports from banks, the system will expressly request this document when the bid is submitted. The final guarantee will be submitted as an attachment to a subsequent email.

The guarantee may be submitted in any of the formats permitted by the Electronic Tendering System. The electronic signature can be incorporated into the document file or be presented as a separate file. In the first case, the user must have the computer system that enables the document to be signed for the format selected. In the second case, the user must include both files (the document and electronic signature) in a compressed file (.zip or 7zip format).
Print quality of bids submitted electronically

The Bid Printing Quality Commitment intends to guarantee that documentation submitted to technicians for evaluation has the same level of quality, independent of whether submitted on paper or electronically.


Bidders are responsible for ensuring their offers do not contain viruses. However, the mere presence of a virus does not mean the bid will be excluded, provided its content can be accessed. The Procurement Desk staff will take this decision.

Recommendations for minimising the presence of viruses:
1)Have up to date antivirus software.
2)Use the .pdf, .rtf, .sxw, .jpg y .tiff formats.
Fecha de la última modificación: 08/04/2015
One-step electronic tendering
  • Electronic tendering
  • Provisional enablement (not Register in the Official Register of Contractors)
  • Provisional enablement (TJVs)
  • Official Register of Contratactors: registration, renewal and modification
  • Official Register of Contractors: find your number
  • Official Register of Contractors Automatic Renewal Activation
  • Official Register of Contractors Certificate Download
  • Official Register of Contractors Certificate Verification
  • Registry of Contracts