Do not assume that result. Explain the nature and level of the applicant’s knowledge and the proposed work without falsely claiming exclusive possession.
Assess the knowledge rather than a headcount of users
Identify what was taught, what colleagues can do and what the applicant’s own advanced or special knowledge involves. The standard is not established merely by being the only person named, nor automatically lost because others learned the process. Provide evidence tied to the organization and actual assignment instead of an unsupported uniqueness slogan.
Hypothetical example: A medical-device assembler is proposed for a U.S. transfer because she can recalibrate a proprietary testing station, while several colleagues can run the standard production line. The first review should identify the company's particular technology or process, the applicant's level of knowledge, how it was acquired, and why the U.S. role needs it. Produce a comparison between routine users and the applicant using real tasks, internal records, and consequences of error. Confirm the continuous qualifying year abroad within the relevant preceding three-year period and the relationship between the employing entities. Do not equate long service with specialized knowledge, or claim exclusivity merely because few people are listed. The decision is whether the evidence describes advanced or special organizational knowledge rather than a valuable but ordinary skill. The five-year L-1B maximum should be tracked with the proposed assignment.
The deciding comparison is between the applicant's demonstrated level and the knowledge reasonably available through ordinary company training. Capture that comparison in factual examples, not a claim that every colleague lacks ability.