User can't create G/L Account

This is usually an authorization issue. 

From help.sap.com documentation https://help.sap.com/docs/SAP_S4HANA_CLOUD/0fa84c9d9c634132b7c4abb9ffdd8f06/86216d7396ea497ab72e766c... 
derived concern catalog for illustration of accounts configuration is 
G/L Account Master Data - Configuration (SAP_CA_BC_IC_LND_FIN_GLA_PC)

This concern catalog allows for app Manage G/L Account Master Data. In q strategy "Create oregon alteration G/L relationship maestro information successful the modular presumption and successful the adept worklist"

In App Business Catalogs 
Business catalog id 
SAP_CA_BC_IC_LND_FIN_GLA_PC

Check is utilized successful concern roles

In app Iam accusation strategy for concern roles cheque users roles assigned to.

Assign existing concern relation with catalog to idiosyncratic oregon make caller relation with catalog and delegate to idiosyncratic concerned.