Construction Development Version

Sicon Construction is a set of add-on modules for Sage 200, based around the well-established Sicon Job Costing module to capture costs from purchase orders, purchase invoices, stock issues, cash transactions and labour to create reliable and accurate costings linked directly to transactions processed within Sage 200. Handling CIS, CITB, Applications, Retentions and Valuations and Payments.

What is a Development Version?

A Development Version is a phased early adopter release preceding a full release. Rather than all new features being released in the first iteration of a full release, we phase the new features across iterations of a ‘development release’. At the end of its development cycle, a full release is introduced and the development release retired, since it is essentially converted into a Full Release. For more information, please refer to the Sicon Release Policy.

Click here to view the Sicon Release Policy

Release notes:

270.1.1

New Features

[#18921] Added a new controller to help draft application/valuation nominal lines.
[#17119] added an error message when attempting to correct or reverse payments or receipts or amend transactions that are linked to a submitted CIS return.
[#17744] Added an error message when attempting to correct or reverse payments or receipts that are linked to a submitted CIS return.
[#18826] Added silent auditing to applications on create, amend and delete.
[#18824] Added feature for deleting applications in the plugin API.
[#18822] added extra validation to delete application methods in the WebAPI platform to check linked retention releases or write offs.
[#18746] Added new endpoints to the applications controller for post, put and delete. Any changes will go through validation.
[#18794] Added a webAPI plugin controller to retrieve Application defaults such as retention percentages from a project or supplier.

Date applied: June 3, 2026