Grouping levels control how Oracle Projects summarizes expenditure items into asset lines. You can group by project, top task, or lowest level task. For example, if you group at the project level, Oracle Projects summarizes all capitalizable costs or retirement costs at all task levels into asset lines at the project level. If you group at a top task level, Oracle Projects summarizes all tasks below that top task into asset lines for that top task. See: Assigning Assets to Grouping Levels.
If you have summarized the top task in the WBS branch, you cannot also summarize at the lowest level. For example, if Top Task 1 is a grouping level, you cannot also group at Task 1.1.1. If Task 2.2.1 is a grouping level, you cannot group at Top Task 2. If you group at the project level, you cannot group at any top or lowest level task.
Note: You also use the grouping method assigned to your project type to summarize expenditure items.
If there is a common asset assignment for the lowest task, then the system selects all assets that are assigned beneath the same parent task, with the exception of parent task. For example, if a common assignment is made at task 2.1, then select any assets assigned to tasks 2.2, 2.3, 2.4, etc, but do not select assets assigned to tasks 3.0, 4.1 and so on, since these tasks are outside the current WBS branch.
Grouping level types determine whether you can associate assets with the grouping level.
For examples of grouping levels and grouping level types, see: Examples of Asset Grouping Levels and Example of Asset Grouping Level Types.