You want to perform a price change of a material in cloud edition and cannot find the app Maintain Material Prices.
- SAP S/4HANA Cloud
As of SAP S/4HANA Cloud 1711, the functionality of the material price change (similar to MR21) is available via Fiori App F2680 Manage Material Valuations (see action 'Change Inventory Prices' on the detail screen for a specific material). The App is part of role Cost Accountant - Inventory:
Catalog : SAP_FIN_BC_IA_PRICEVAL_PC
Business role: SAP_BR_INVENTORY_ACCOUNTANT
You may use MR21 as search criteria on the Fiori Apps library and you will find complete App implementation information:
FIORI App MR21 price change inventory Material Ledger Actual Costing Manage material valuation, Goods Receipt, Others, 501, MBEW, M7309, Price Change, Negative, Value , KBA , csg_q , CO-PC-ACT , Actual Costing , How To