Official rule text
[CL-08-OM-ISIC] - Industrial Classification Code (BTOM-033) must be provided from the International Standard Industrial Classification of All Economic Activities list published by the Omani Ministry of Commerce, Industry and Investment Promotion.
What this means
The industrial classification code must be a valid 6-digit ISIC code from the Oman Ministry of Commerce's activity list. An HS (customs/goods) code does not belong in this field - it goes in the separate item classification field.
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.
Back to all 291 rules