A user session on the server could not be created. Try to start the client again. If the problem continues, contact the Microsoft Dynamics AX administrator.

The transaction log for database 'DynamicsAx1' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases

Object Server 01: Dialog issued for client-less session 1: [Microsoft][SQL Native Client][SQL Server]The transaction log for database 'DynamicsAx1' is full.
To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in
sys.databases [UPDATE SYSTEMSEQUENCES SET NEXTVAL=?,RECVERSION=? WHERE ((ID=?) AND (TABID=?))]

Dialog issued for client-less session 1: An error occurred while obtaining new RecId value for the table.

The transaction log for database ' ' is full. To find out why space in the log cannot be reused, see the log_reuse_wait_desc column in sys.databases

Resolve

https://bombtrk.wordpress.com/2011/10/27/the-transaction-log-for-database-is-full-to-find-out-why-space-in-the-log-cannot-be-reused-see-the-log_reuse_wait_desc-column-in-sys-databases/

IMP:
Check the log number