Ministerial Resolution No. 1535 of 2004 [Executive Bylaws]
Article 31 - Main Activity
[The "main activity" of the taxpayer engaged in natural gas investment and transportation means the activity or activities authorized under an agreement or contract for the exploration and production of natural gas, or those licensed under the Gas Supplies and Pricing Regulations to conduct work in the field of natural gas investment, including any licensed independent activities.][22]