Input data for entry &1 is too long for the secure storage

What causes this issue?

An entry with the ID &V1& is to be saved in the secure storage. However,
the entry has content whose length exceeds the maximum permitted length
for the secure storage.

System Response

The entry is not inserted.

How to fix this error?

The permissible length for entries in the secure storage is between 36
and 109 characters, depending on the content to be stored.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.