For the batch where-used list, the module exit EXIT_SAPLCHVW_001 is available in the enhancement SAPLCHVW_001.
You use this exit to fill in the additional fields you added to the ALV list of the batch where-used list, for example, fields with batch master data, such as the shelf life expiration date.
To add the additional fields to the ALV list, use the APPEND structure in table CHWVSHADOW.
To use the customer exit, you have to Set Up the Batch Where-Used List.
In contrast with modifications, enhancements are always release-insensitive, as they are not made in the R/3 system, but in a name space that is reserved for the customer.
The general procedure for creating enhancements is contained in the enhancement transaction under Utilities -> Online manual.
The documentation on each enhancement is contained in the enhancement transaction under SAP documentation .