The New Time Interval Overlaps with One Existing Time Interval

This topic describes several possible scenarios where a new time interval overlaps with an existing time interval.

If the effective dates in the new record overlap with the existing record’s start date, or with the existing record’s end date, as shown in the following figures, then the application displays an error message and does not enter the new effective dates.

This figure shows two time intervals. An old time interval starts on Day 1 and ends on Day 3, and a new time interval overlaps this by starting on Day 2 and ending on Day 4.

This figure shows two time intervals. The new time interval starts on Day 1 and ends on Day 3, and the old time interval starts on Day 2 and ends on Day 4.

However, if the new time interval is entirely within an existing time interval and does not overlap with the start or end date, as shown in the following figure, then the application creates three time intervals, as shown in the fourth figure in this topic.

This figure shows two time intervals. The old time interval starts on Day 1 and ends on Day 4, and the new time interval is entirely within this period. It starts on Day 2 and ends on Day 3.

This figure shows three time intervals. The old time interval has two periods: the first period starts and ends on Day 1, and the second period starts and ends on Day 4. The new time interval starts on Day 2 and ends on Day 3.

Likewise, if the new time interval is entirely within an existing time interval but its end date is the same as the end date of the existing interval, as shown in the following figure, then the application creates two time intervals, as shown in the sixth figure in this topic.

This figure shows two time intervals. The old time interval starts on Day 1, and ends on Day 3. The new time interval starts on Day 2 and also ends on Day 3.

This figure shows two time intervals. The old time interval starts and ends on Day 1. The new time interval starts on Day 2 and ends on Day 3.

However, if the new time interval is entirely within an existing time interval but its start date is the same as the start date of the existing interval, as shown in the following figure, then the application displays an error message and does not create the new time interval.

This figure shows two time intervals. The old time interval starts on Day 1 and ends on Day 3. The new time interval starts on Day 1, and ends on Day 2.

However, if the new time interval extends beyond the existing time interval, as shown in the following figure, then the application displays an error message and does not create the new time interval.

This figure shows two time intervals. The old time interval starts on Day 2 and ends on Day 3. The new time interval starts on Day 1, and ends on Day 4.