The phrase "to create a barrier" means to build or establish something that prevents or hinders entry, communication, or access between two or more things or people. Full definition
This mineral veil primer is essential for creating that barrier between your skin and makeup. (meetat-thebarre.com)
Until recently, emergency contraception has been kept behind pharmacy counters, which created barriers for women of all ages because pharmacies often have long lines and shorter operating hours. (plannedparenthoodaction.org)
So by creating any barriers in the path to accomplishing this, you may be losing potential clients that you would have otherwise converted. (lexicata.com)