Determine the actual location, activity and status required. A planned L-1B petition does not itself authorize U.S. training work.
Separate knowledge transfer from immigration permission
Record whether instruction would occur from Canada or physically in the United States, who receives it and what status the applicant holds. Do not assume an internal training session is exempt simply because no customer is billed. Confirm the applicable process and effective dates, and arrange an operational alternative if the planned session precedes authorization.
Hypothetical example: A robotics-maintenance specialist is invited to train a U.S. affiliate after a machine failure, but the company has not yet determined whether the assignment will involve hands-on repair, instruction, or remote support. First define the U.S. duties, location, duration, and recipient of the services. The review should produce a timeline that separates emergency business needs from permissible immigration steps. Confirm the foreign employment period and qualifying relationship before treating an internal request as transfer-ready. Do not begin in-person work because the company calls it a meeting or an orientation. Sequence any filing or admission plan around the real assignment and keep an alternate operational plan if authorization is delayed. Timing problems often result from last-minute changes that transform a training visit into productive work without updating the evidence or process.
Write down the fallback service method, such as remote support from abroad, before the business need becomes urgent. That helps the company avoid treating an unapproved visit as a transfer already in effect.