Do not complete the block labeled taxmap/instr/i1040sc-003.htm#TXMP1ec367a5
Social security number (SSN). Instead, enter your employer identification number (EIN) on line D.
Describe the business or professional activity that provided your principal source of income reported on line 1. If you owned more than one business, you must complete a separate Schedule C for each business. Give the general field or activity and the type of product or service. If your general field or activity is wholesale or retail trade, or services connected with production services (mining, construction, or manufacturing), also give the type of customer or client. For example,
wholesale sale of hardware to retailers or
appraisal of real estate for lending institutions.