Official rule text
[BTOM-PRE-001] - Document root MUST be a UBL 2.1 Invoice or CreditNote in the correct namespace. Found ' ' in namespace ' '.
What this means
The file is not a UBL Invoice or CreditNote document (or the XML namespaces have been changed). This usually means the wrong file was uploaded, or the XML was edited by hand and a namespace got broken.
What to do
Share this rule id with whoever manages your invoicing software or IT — or ask TechMate to fix it for you (see below).
Check whether your invoice hits this rule — freeDocument format & structure
Whether the file itself is a valid UBL invoice or credit note in the right namespace and version — the checks that run before anything about the invoice's content is even looked at.
Other rules in this category
TechMate is a systems integrator, not an OTA-accredited Service Provider. We help you get ready and connect you to an accredited provider; final validation and acceptance always sit with that provider and the Tax Authority.
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