These modeling features have a different behavior, or are not available, in Polaris.
| Feature | Classic | Polaris |
| Breakback | If Breakback affects more than 1,000,000 cells, the system displays a warning message. | |
| Brought forward | If you apply brought forward to a line item with a formula, you can't edit the cell for this additional time period. | Brought forward isn't available in Polaris. |
| Drilldown | You can use Drilldown on any cell that contains a formula or summary. | Only evaluated expressions display for Drilldown. For example, only the condition and chosen branch of an IF THEN ELSE clause displays for Drilldown. |
| Switchover | The behavior of Switchover in Polaris differs from Classic regarding data preservation. The current Polaris implementation keeps the primary data from before Switchover, when it's enabled. This means data reappears when Switchover is disabled. This feature shouldn't be relied upon as a model building practice. Switchover behavior may change in future releases, and Anaplan doesn't guarantee this behavior remains the same. | |
| Optimizer | When a problem is unbounded or has no solutions, an explicit error is displayed. Learn more about Optimizer limitations. | Optimizer isn't available in Polaris. |
| Summary methods | Each data type has a default summary method. It's recommended practice to set your line item's summary method to None, and only use another summary method when you need it. This table in Summary methods describes the valid summary methods you can use with each data type in the Classic Engine. | The Polaris engine has some differences. |
| Time ranges | The only time series functions allowed to make a reference across different time ranges are PREVIOUS, NEXT, and TIMESUM. Functions that can make references across different time ranges always operate across the entire model timeline. | Every function can make a reference across different time ranges. Functions only operate across the target time dimension. See Time ranges in Polaris for considerations on its use with a sparse calculation engine. |
| Year to Date and Year to Go | Year To Date (YTD) and Year To Go (YTG) summary periods aren't available in Polaris | |
| Formula reference to a line item subset | A value from another line item subset is rejected, even if that line item value is also part of the line item subset the format uses. | A value from another line item subset can be stored in a line item with any line item subset format. However, where the stored value doesn't exist in the line item subset the format uses, the result is blank. |
| Line item dimensionality | The number of dimensions is limited by workspace size. | The number of dimensions for a line item is limited by the overall dimension index total. |
| Line item count | The count of line items is limited by workspace size. | A model may contain up to 15,000 line items. |
| Version count | The count of versions is limited by workspace size. | A model may contain up to 100 versions. |
| List property count | The count of list properties is limited by workspace size. | A model may contain up to 15,000 list properties. |
| Value of empty summaries | References to empty summaries return the value of the corresponding cell. | References to empty summaries take the default value of the data type. For example, 0 for Numbers, and FALSE for Booleans. |
| Filters on empty summaries | Empty summaries have value and can show up in filtered results. | Empty summaries have no value, and don't show up in filtered results. |
| Sort on empty summaries | Empty summaries use their calculated value when sorting. | Empty summaries take the default value of the data type, when sorting. |
| Formula length | There's no set limit for a formulas. | The maximum length of a formula is 2,000 characters. |
| Edit line items in composite lists | If a line item is dimensioned at a given level of a hierarchy, then higher level empty summaries are evaluated. These summaries depend on the data type and the summary method. For example, 0 for SUM. | If a line item is dimensioned at a given level of a hierarchy, then higher level empty summaries have no value. Empty summaries at the given level are editable. |
| Exports and views | If your export or view exceeds a row count or column count of 2,147,483,647, the view or export silently truncates. | An error message displays if your export or view exceeds a row count or column count of 2,147,483,647. |
| Cell character limit | There's no character limit for cells. | There's a 10,000 character limit for cells. If you enter or paste more than the limit, you will receive an error message. |
