Hello Ruth,
I believe the attached document has all the information you require.
Here is an example of searching by "LastActiveDate"; you`ll need to supply the data to the search parameters "FromLastModDate" for cases:
<WAPI>
<TENANT>tenant</TENANT>
<USERNAME>username</USERNAME>
<PASSWORD>pass</PASSWORD>
<COMMAND OBJECT="CASE" ACTION="GET">
<FromLastModDate>08212024</FromLastModDate>
</COMMAND>
</WAPI>
You can also use a range:
<WAPI>
<TENANT>tenant</TENANT>
<USERNAME>username</USERNAME>
<PASSWORD>password</PASSWORD>
<COMMAND OBJECT="CASE" ACTION="GET">
<FromLastModDate>08012024</FromLastModDate>
<ToLastModDate>08192024</ToLastModDate>
</COMMAND>
</WAPI>
This is for tasks:
<WAPI>
<TENANT>tenant</TENANT>
<USERNAME>user</USERNAME>
<PASSWORD>password</PASSWORD>
<COMMAND OBJECT="TASK" ACTION="GET">
<FromLastModDate>08012024</FromLastModDate>
<ToLastModDate>08192024</ToLastModDate>
</COMMAND>
</WAPI>
If you want to use object, please note that this can only be done one at a time as it requires the ID (page 53 of the doc above)
Lastly, to confirm deleting a customer causes a cascade effect; all cases, tasks, and follow-ups related to a given customer are
deleted as well. (page 33 of the doc above)
You can apply the above solutions yourself or you could reach out to your sales rep in order to discuss 8x8 Professional Services engagement.