What should be entered in the source expression of a context mapping?

In a context mapping, the source expression is a pivotal element used to establish connections between different elements or to transform data from one form to another. Entering a calculated formula in the source expression is crucial because it allows for dynamic data evaluation and manipulation based on specific criteria or inputs.

When a calculated formula is used, it can derive its value from various other fields or inputs, providing real-time calculations that adapt as underlying data changes. This capability is essential in environments where data is frequently updated or where decisions depend on calculations that need to reflect the most current information.

Static values, on the other hand, lack the flexibility required for dynamic environments. Reference IDs, while useful for linking processes or identifying specific items, do not provide the calculated outputs necessary for context mapping. Similarly, picklist selections offer predefined options but do not inherently encompass the dynamic data manipulation that a calculated formula does. Thus, using a calculated formula ensures that the context mapping is robust and responsive to changing data inputs.