#️⃣ Can I continue my invoice numbering when creating a new sequence?

No. When you create a new sequence, you must start a new numbering.

This rule is mandatory whenever you change sequences or migrate between invoicing software.

This is because each sequence has a unique identifier in the SAF-T file, which varies depending on the software that creates the sequence. Therefore, a new sequence cannot continue numbering from a previous one—it must start at number 1.

According to Despacho n.º 8631/2014, section 2.3.3:

"A given sequence/type of invoicing document, goods movement document, or any other document that can be delivered to a customer for verification of goods delivery or service provision cannot contain documents from different origins (e.g., documents created in the system and imported from an external system in the same sequence/type of invoicing document)."

⚠️ If you were using another invoicing software, it is essential that the invoice sequence name in InvoiceXpress is different from the one used in the previous program.

Otherwise, you risk submitting documents with the same number/sequence to the Portuguese Tax Authority from different origins.