No advantages, on CA PPM side, that I'm aware of. However, you may have a business advantage, due to your business processes/rules that are bi-weekly (e.g. actual costs are updated and pushed into Rate Matrix biweekly) then maybe you have a local, business advantage for doing this. For instance, we have a group that updates their actual costs monthly, so they want to process transactions monthly, not weekly. When we process weekly, they are using the 'old' actual cost and need to perform an end of month adjustment - and WIP adjustments in CA PPM are not easy to perform in large quantities. Of course, we have other groups that want to process weekly, so there's a bit of an unresolved conflict... if there was a good way to filter transactions on the Post to WIP page, we might meet both groups objectives. But that's another story - which had an ERQ behind it - now, see that it didn't carryover to this forum's Idea list....
Disadvantages:
- Quality of timesheet content/accuracy degrades the longer one waits - unless user's have good personal habit of filling in their work daily, regardless of submission requirements.
- Project scheduling updates delayed - can't be performed weekly if actuals and pending ETC requests are turned in bi-weekly.
- Transaction errors take longer to find - bigger quantity to correct. Biweekly vs. weekly, maybe the difference is not that great. But remember, this is inventory that is not just produced and sitting idle - it can go defective while waiting (e.g. Project completed successfully, all timesheets turned in approved, posted - then, while waiting for Post to WIP and for Posting Transactions to Financials, project and/or resources are made inactive - now, posting creates invalid transactions, which need to be corrected....the longer one waits to complete financials, the more errors will accumulate.)
You could still have weekly timesheet submission, approval and posting, but then run the "Post to WIP" function and "Post Transactions to Financial" job biweekly. That way, you might get better timesheet content, have it delivered to project managers weekly, but then meet whatever the requirements are from finance for the biweekly financial processing. If the errors from point 3, above can be minimized through your business process controls (e.g. don't deactivate projects or resources before financial processing is completed), then maybe this would work for you.
What do you think?