13 CFR §121.1007

1. (a)Particular procurement. A protest challenging the size of a concern which does not pertain to a particular procurement or sale will not be acted on by SBA.
2. (b)A protest must include specific facts. A protest must be sufficiently specific to provide reasonable notice as to the grounds upon which the protested concern's size is questioned. Some basis for the belief or allegation stated in the protest must be given. A protest merely alleging that the protested concern is not small or is affiliated with unnamed other concerns does not specify adequate grounds for the protest. No particular form is prescribed for a protest. Where materials supporting the protest are available, they should be submitted with the protest.
3. (c)Non-specific protests will be dismissed. Protests which do not contain sufficient specificity will be dismissed by SBA. The following are examples of allegation specificity: