Official rule text
[CL-10-OM] - When VAT category code (IBT-118 / IBT-151 / IBT-095 / IBT-102 / IBT-192) is 'Z' (Zero rated), the VAT exemption reason code (IBT-121 / IBT-186 / IBT-196 / IBT-198) MUST be coded using the Zero rating codelist (VATZR-OM-01..VATZR-OM-16).
What this means
Wherever the zero-rated VAT category is used (on a line, discount, charge or VAT breakdown), the reason code must be one of the official zero-rating codes (VATZR-OM-01 to VATZR-OM-16). If the supply is not actually zero-rated, correct the VAT category instead.
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 — freeCodes & classifications
Whether codes on the invoice — item classification (HS, ISIC), Incoterms, unit codes, document type — are drawn from the exact code list Oman's rules require, not just any plausible value.
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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