Release : 19.0
Both maps and ADS dialogs have a CHECKOUT and RELEASE facility to prevent multiple updates to the same entity from different users or batch and online. A map can have an explicit or implicit checkout. The explicit checkout is done in MAPC from the CHECKOUT option in the MODIFY menu item. An explicit checkout is only released by the RELEASE option in the MAPC MODIFY menu item.
An implicit checkout is done when you start modifying a map. The implicit checkout is released after a successful compile.
The error indicates that the map has a checkout so it cannot be processed. The checkout needs to be released first.
To release the checkout do one of the following:
See documentation section Checkout and Release Procedures, Creating an RHDCOPTF Module and article 56986 on modifying RHDCOPTF