| File | Field | Required | Mechanism(s) |
|---|---|---|---|
| Bag-Info | Bagging-Date | default, APTrust, MetaArchive | generated |
| Bag-Info | Bag-Count | APTrust | splitter |
| Bag-Info | Bag-Size | default, MetaArchive, Perseids | generated |
| Bag-Info | Payload-Oxum | default, MetaArchive, Perseids | generated |
| Bag-Info | Source-Organization | default, APTrust, MetaArchive | sidecar |
| Bag-Info | Organization-Address | sidecar | |
| Bag-Info | Contact-Name | MetaArchive | sidecar |
| Bag-Info | Contact-Phone | MetaArchive | sidecar |
| Bag-Info | Contact-Email | MetaArchive | sidecar |
| Bag-Info | External-Description | MetaArchive | parameter |
| Bag-Info | External-Identifier | parameter | |
| Bag-Info | Bag-Group-Identifier | parameter | |
| Bag-Info | Internal-Sender-Identifier | parameter | |
| Bag-Info | Internal-Sender-Description | parameter | |
| APTrust-Info | Access | APTrust | parameter |
| APTrust-Info | Title | APTrust | parameter |
Mechanism
- generated: the import/export tool generates these automatically
- parameter: user specifies the value for each Bag
- sidecar: probably the same for all Bags generated by a user (or at least for big groups)
- splitter: generated by an external tool for splitting bags to meet size requirements
