# Failed Schema Sync

The total binary footprint of all ScyllaDB columns, tables, etc., must fit a single commit log segment size
divided by two. If this requirement is not met, schema sync may fail. The error message may resemble the following:

```console
Oct 06 22:12:47 ip-172-21-1-122 scylla[1213356]:  [shard 0] storage_service - Fail to pull schema from 172.21.2.210: std::invalid_argument (Mutation of 27837439 bytes is too large for the maximum size of 16777216)
Oct 06 22:12:47 ip-172-21-1-122 scylla[1213356]:  [shard 0] migration_manager - Pulling schema from 172.21.2.210:0
```

In such a case, you may need to increase the commitlog segment size limit. To do this,
go to `/etc/scylla/scylla.yaml` and set the `commitlog_segment_size_in_mb` parameter to a higher value.

#### NOTE
The `commitlog_segment_size_in_mb` parameter must be set to the same value on **all nodes** in a cluster.