Identify what the payments actually covered instead of assigning them a new purpose.
Use commercial records accurately
A product purchase or service invoice is not automatically a training expense for the applicant. Explain genuine learning and experience without creating a financial history that the records do not support.
Reconcile each customer payment to its underlying invoice, payer, recipient, and stated deliverable. Product purchases, maintenance subscriptions, travel reimbursements, and training charges should remain in their true categories. If the applicant attended a course, gather the agenda, attendance record, instructor, internal materials, and proof of who paid rather than renaming a sales invoice. Spending can corroborate how knowledge was acquired, but L-1B eligibility depends on special product knowledge or advanced process knowledge, a qualifying related organization, and one continuous foreign year during the relevant preceding three years. General technical education and commercial volume do not satisfy those conditions. Keep evidence-development expenses apart from official petition charges on the current fee schedule.
Hypothetical example: A pulp-testing equipment technician near Rivière-Éternité sees large payments from a mill to his future employer. The accounting ledger shows that most covered instruments and maintenance, while one smaller invoice funded genuine operator training he attended. He submits each document under its correct purpose, supplemented by course records and later internal assignments. The company does not portray the entire sales relationship as personal training investment. Its knowledge explanation instead identifies proprietary calibration workflows he mastered as an employee and will apply in the proposed role.