Hi @Vibhas ,
This is because more than 99% of your workspace is full. You can archive or delete the models that are not used to reduce the size of your workspace.
How to do thisplz help
@Vibhas Please see this page on Anapedia for instructions on archiving models: https://help.anaplan.com/62a3bfe5-f04c-4e76-b3df-3f957c9abbf7-Archive-or-restore-a-model
You can do that under model management dialog box. Search "copy and archive models" in anapedia for more information.