ACATS 3.0 User's Guide
5.7.2 Deviation from Expected Results - Petition & Review
Each test indicates in its prologue what it expects 
from a conforming implementation. The result of processing a test is 
acceptable if and only if the result is explicitly allowed by the grading 
criteria for the test.
A user may challenge an ACATS test on the grounds 
of applicability or correctness. A challenger should submit a petition 
against the test program to an ACAL or to the ACAA, following the procedure 
and the format presented in 
[Pro01]. A 
petition must clearly state whether it is a claim that the test does 
not apply to the implementation or that the test is incorrect. The petition 
must indicate the specific section of code that is disputed and provide 
a full explanation of the reason for the dispute.
ACALs will forward 
petitions from their customers to the ACAA for decisions. The ACAA will 
evaluate the petitioner's claims and decide whether: 
the test is applicable to the implementation (i.e., 
deviation is not allowed);
the test is not applicable to the implementation 
(i.e., deviation is allowed);
the test should be repaired (deviation is allowed, 
and the modified test should be used for determining conformity assessment 
results);
the test should be withdrawn (deviation is allowed 
and the test is not considered in determining conformity assessment results). 
A deviation is considered to be a test failure unless 
a petition to allow the deviation has been accepted by the ACAA.