Two firms currently providing police support - EDS and Andersen Consulting - are not necessarily in line to win the "clean up after Incis" work.
Both have put options before Police, but the State Service Commission report released last week finds fault with both companies' proposals.
EDS is providing support for LES, the system which is built on the old Wanganui Computer and which, but for the collapse of Incis, was to have been phased out.
"As such [EDS] feel they now have an opportunity to enhance LES and meet Police requirements," the report says. EDS has proposed bringing in new hardware to extend the Unisys 2200 running LES, as well as adding a GUI to its front end.
In addition, the company has proposed building on LES for both Police and Ministry of Justice requirements.
However the report firmly rejects that proposal. "This is not an approach to be recommended because as presently structured LES is not a platform to build on."
However the commission wants EDS to keep managing the LES system for however long it is necessary - which could be anywhere between 18 months and three years.
Andersens, which is working on the new Department of Courts System, has suggested the Police adopt the Irish Police Pulse system and the two be integrated. Andersens developed Pulse for the Irish and are marketing it elsewhere as Navigator. Begun at around the same time as Incis, it seems to have avoided most of the pitfalls of its kiwi counterpart.
However the State Services Commission is yet to be convinced, and indeed the report seems to suggest Andersens may have been too pushy with its proposals.
"They see themselves as a replacement for IBM ... Andersens have continued to market actively to Police and Department of Courts, including bringing their partner responsible for the Irish system to New Zealand," the report says.
The customisation and implementation of Pulse would take at least a year and probably longer: moreover, it would "provide similar challenges to Incis in its implementation strategies".
While Pulse is not ruled out, it is not yet seen as a replacement, the report concludes.