Well if GMAT is the only issue in one's profile, then disclosing it in the app might not be a bad thing.
https://poetsandquants.com/2011/11/02/ho ... -overcome/"While the 490 score in this fall’s entering class at Harvard is stunningly low, it’s not the lowest successful B-school candidate Bauer has seen. His firm, for example, helped a Wall Street analyst gain admission to a top-10 Ivy League business school despite a 410 GMAT after taking the exam five separate times. Making it even more difficult, the candidate had a modest 3.0 GPA in a non-quant undergrad major.
However, says Bauer, “he was an overachiever in every other aspect of his life, but learning abilities made the GMAT an insurmountable challenge. Our overall strategy for him was to confront his GMAT difficulties head-on, with candor and conviction, defining his candidacy as much more than the GMAT. More specifically, we encouraged him to: 1) provide third-party documentation of his learning disability, 2) meet with and earn the endorsement of a specialist in learning disabilities at the targeted university, 3) meet face-to-face with the MBA admissions director to tell his story in human terms, 4) produce amazing essays that focused inordinately on the “personal” and “academic” rather than the ”professional” aspects of his candidacy, and 4) persevere by reapplying after being rejected once.”