Add request from service catalog with mobile app - MSP

Add request from service catalog with mobile app - MSP

Hi,
My client user want to add service catalog request with MSP mobile app, but they can't.
1- What should they do?
2- Do you have any solution?
3- Can they use SDP mobile app instead of MSP mobile app?

MSP v10.5.13
DB: MS SQL

Thanks for helping
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