Refreshing Attributes and Arguments

The refresh option generates new mappings for attribute/columns or operation arguments/load arguments based on the metadata of the data source to which the mobile business object (MBO) is bound

For MBOs already bound to data sources, selecting Refresh refreshes and/or remaps operation arguments, load arguments, and attributes based on the EIS data source metadata changes. Refresh is available from both the Attributes and Operation Parameters tabs in the Properties view, and also affects how Preview refreshes attributes and operation arguments. Internally, selecting Refresh:

Queries the data source metadata from scratch.
Creates new columns or arguments using the fresh metadata information (name, type, default value).
Generates new data source mappings for attributes, load arguments, or operation arguments.
Establishes "Fill from attribute" links for operation arguments.

You have an MBO with attributes bond to a database table defined as:

Customers[ID, Surname, GivenName, Address, Phone]

As the developer, you want to eliminate the “Address” column and better represent the address information. You modify the EIS database schema to:

Customers[ID, Surname, GivenName, Street, City, State, Country, PostalCode, Phone]

The MBO attributes become out of date because of the schema change, requiring the developer to Refresh the metadata. Note that after you refresh, the "Address" attribute is unbound. You can manually add attributes and map them to the columns in the tabular view, or select Remap to create the new attributes and map them to the appropriate columns automatically based on the modified metadata.