# Understand mapping
One common challenge when dealing with audits is about being able to reuse your assessment on one framework to move to a different one. This commonly refered to as mapping or crosswalk between standards.
This capability is supported on CISO Assistant and allows the user to create a projection of the content of an audit, given that a mapping is available. Mapping are library objects that can be customized, imported and submitted to the community. To see the available ones, head to the libraries store and filter to mapping:
Mappings are essentially a representation of the links between assessable nodes of a framework, and for which we are using the convention documented on NIST's OLIR project.
Mapping is a directed graph linked a SRC framework to a TGT framework on which the nodes can have one of the following relationships:
To create yours, you can follow one of the examples on `/tools` or bootstrap a starter using the `prepare_mapping`script.
To apply a mapping, you needt to first load a mapping from the library. Then, head to your audit and click on `apply mapping`and select the targeted framework and see the projected being created ✨.
Note: the apply mapping feature can also be reused to clone the audit and create a new revision, if the same framework and same scope are selected.
