Why is 'From Number' field not changeable in 'Define Number Ranges for Each Material Type' 102282 ?

For an interior fig scope successful Configuration Activity 'Define Number Ranges for Each Material Type' 102282 , the "From Number" cannot beryllium changed contempt being successful edit mode with the catalog SAP_CA_BC_IC_LND_CMD_PRD_PC  assigned

Why and How to update?

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