No. Explain the actual knowledge and its relevance to the assignment. Customer preference is context rather than a substitute for the governing standard.
Describe why the work needs the knowledge
Use actual company product or process evidence rather than an unsupported claim that no other person could do the work.
L-1B concerns special knowledge of the company's products and international application, or advanced knowledge of its processes and procedures; ordinary software familiarity is not enough, although the information need not be secret or unique. L-1B requires specialized knowledge, not merely general technical competence, alongside one continuous year of qualifying foreign employment within the previous three and a parent, branch, subsidiary, or affiliate relationship. The knowledge itself must be special or advanced knowledge of the organisation’s own product, service, research, equipment, techniques, management or procedures — not a skill the wider labour market also teaches, and not seniority. The applicant must have been employed continuously for one year within the three preceding years by a qualifying entity abroad, in a managerial, executive or specialized knowledge capacity, and the United States role relied on specialized knowledge as defined.