<prompt> Translate the following text to EnglishMipango ya mkataba kwa ajili ya kazi ya uthibitisho uliofanywa kwa mujibu wa GAGAS inapaswa kuandaa upatikanaji kamili na wa wakati kwa nyaraka za ukaguzi ili kuwezesha utegemezi wa wakaguzi wengine juu ya kazi ya wakaguzi, pamoja na ukaguzi wa udhibiti wa ubora wa ukaguzi na uhakika.  <response>: Contractual arrangements for attestation engagements performed in accordance with GAGAS should provide for full and timely access to audit documentation to facilitate reliance by other auditors on the auditors work, as well as reviews of audit quality control and assurance. 