Newly created time units Bi-Monthly and Quarter lead to incorrect quantities in contracts

Hi,

I'm facing the following problem. We are migrating contracts from another ERP system to Oracle. To make sure all migrated contracts have a correct billing schedule once these are renewed in Oracle, we've setup multiple billing profiles. Unfortunately in a billing profile you are only able to use time UOM's used as the interval and you cannot enter a duration (2 months, 6 months etc). Default I had created HOURS, DAYS, WEEK, MONTH and YEAR already. We also need billing schedules that invoice Bi-Monthly, Quarterly or Half-Yearly. Therefore I had to create time UOM's (XXBiMonthly, XXHalfYearly and QUARTER) to support this.