| Name | Description | Type | Additional information |
|---|---|---|---|
| Date |
change date |
string |
None. |
| Field |
property name |
string |
None. |
| OldValue |
old value of property |
string |
None. |
| NewValue |
new value of property |
string |
None. |
| Identifier |
contractor identifier |
string |
None. |