Metacat

Add a check that the sid shouldn't equals the pid in the update and create method.

Add the code the check if the format of the sid is valid in the system metadata.

Add the enforcement for the sid in the create method.

Enforce the sid requirement in the update method.

Check if the identifier is a sid for the v1 update.

Add the code to handle the deleted identifier in the checking v1 system metadata existing method.

Enforce the mn.getChecksum only to handle an PID.

Add the series id to the system metadata.

Implement the series id in the getSystemMetadata method.

Looking for sid for the method describe.