"Still in process" emphasizes that something is ongoing and has not yet been completed. It focuses on the unfinished nature of the action.
Example:
* "The order is still in process, but it should ship out tomorrow."
"Processing" is a more active term, suggesting that something is actively being worked on or handled. It focuses on the action itself rather than the state of being unfinished.
Example:
* "Your payment is currently being processed. You will receive a confirmation email soon."
In summary:
* "Still in process" is used when you want to emphasize that something is incomplete.
* "Processing" is used when you want to highlight the active action of handling something.
Both phrases are correct, but the choice of which one to use depends on the specific context and the emphasis you want to convey.