2.20 Recent internal reviews conducted by the ATO have identified the need for improved guidelines to help ensure administrative practices for ACAs are applied consistently across BSLs. 58 These practices include negotiating ACAs, dealing with legacy issues such as GST implications of multiparty transactions, providing appropriate (not excessive) levels of administrative support, interpreting core ACA terms, examining disclosures and conducting the annual sign‐off. 55 The electronic case management system is an enterprise-wide system used to manage cases and work items, and manage client relationship interactions arising from telephone calls and correspondence. The electronic case management system is supported by procedures and processes. 56 The ITX BSL appoints Client Relationship Managers for large public and privately operated entities with turnover of more than $250 million. 57 Eleven of the 28 ATO officials interviewed advised they had received no specific training. The remaining 17 did not comment. 58 Similar comment was made to the ANAO by the ATO officials interviewed during the audit. Management Arrangements ANAO Report No 2014–15 Annual Compliance Arrangements with Large Corporate Taxpayers 47 2.21 There would be benefit in the ACA Oversight Committee reviewing the current training and guidance material to ensure there is appropriate support for compliance officers managing ACAs, particularly in light of the move from the traditional audits and reviews to a more cooperative compliance approach. Management and external reporting of ACAs 2.22 Each of the three BSLs produces its own management report on ACAs, which are primarily included in consolidated reports of compliance performance with respect to the taxes managed by the BSL. The key management reports focus on deliverables (outputs) or progress in addressing particular issues or administrative challenges, as shown in Table 2.1.