--- title: "How to save a document again according to the Software Certification?" slug: "1602862844" updated: 2026-07-30T07:47:19Z published: 2026-07-30T07:55:55Z canonical: "help.ila.cegid.com/1602862844" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.ila.cegid.com/llms.txt > Use this file to discover all available pages before exploring further. # How to save a document again according to the Software Certification? - [x] PT - [ ] ES - [ ] AO - [ ] CV - [ ] MZ - [ ] ST - [ ] GW - [x] Professional - [x] Executive - [x] Public Sector - [ ] Omnia - [ ] Evolution --- After saving the documents under the Software Certification, **it is not possible to change data relevant for tax purposes**. In these cases, when the document has already been printed, since it is automatically blocked for changes, it is necessary to edit the document and in the context operations, select the option **Unblock**. --- ## Data that cannot be changed In a signed sales document (certified), the following fields **cannot be changed**: **Data used to generate the signature** - Document date; - Document saving date; - Document identification (Type, Series, Number); - Document total; - Previous document signature (if it is not the first document of the series). **Header data under the VAT code** - Recipient name or company name; - Recipient tax residence; - Recipient tax ID number; - Currency and exchange rate; - Loading data - Unloadingexecution data. **Rows data under the VAT code** - Quantity; - Item denomination; - Taxable base value; - Tax rate; - Tax amount; - Justification for not applying the tax; - Intracommunitary operation type; - References to the documents that originated the row. If you wish to change fiscally relevant data, you can reverse it in order to cancel the document. The reversal consists in generating a document with contrary nature, allowing to cancel the values and postings involved (because they have contrary signs). --- ## Reverse documents To reverse documents created under the Software Certification, follow these steps: 1. Ensure that in **Marketing & Sales | Sales | Resources | Tables | Sales Document**, the document is configured to allow reversals; 2. Access **Marketing & Sales | Sales | Documents:** 3. Edit the document being reversed; 4. Access the option **Reversal** in the **Context** operations; 5. Specify the reversal reason; 6. Click **Reverse;** 7. Check if the created reversal document was specified. > [!WARNING] > If the document being reversed has the option **Original document copy** active, you can only reverse if the option **Allows to insert from the editors** is active.