3763210 - The API "API_BUSINESS_PARTNER" is unable to read the data using Side by Side extensibility by using only Display Catalog

• The API "API_BUSINESS_PARTNER" is not allowing to Read the data via the CB User Id via the Display Catalog "SAP_CMD_BC_BP_DISP_PC"
• It is possible to read/fetch the data via the same CB User using the Maintenance Catalog "SAP_CMD_BC_BP_MAINT_PC"
• The Error encountered when trying to fetch the data via the Display Catalog is "[{\"ContentID\":\"\",\"code\":\"CX_NO_AUTHORIZATION\",\"message\":\"Ei käynnistysoikeutta: API_BUSINESS_PARTNER               0001, palautusarvo 4\",\"propertyref\":\"\",\"severity\":\"error\",\"transition\":false,\"target\":\"\"},{\"ContentID\":\"\",\"code\":\"/IWBEP/CX_MGW_TECH_EXCEPTION\",\"message\":\"User does not have the sufficient authorizations\",\"propertyref\":\"\",\"severity\":\"error\",\"transition\":false,\"target\":\"\"}]}}}"}" 

SAP S/4HANA Cloud Public Edition

api_business_partner, api_product, r3tr iwsv, 0001, 403 forbidden, insufficient authorizations, display catalog, maintain catalog, sap_cmd_bc_bp_disp_pc, sap_cmd_bc_bp_maint_pc, sap_cmd_bc_pr_maint_pc, cds c1, read-only, side-by-side, btp, odata, API_BUSINESS_PARTNER, Side - , KBA , LO-MD-BP-2CL , Business Partners for Public Cloud , LO-MD-BP-ODT , OData Service for Business Partner , Problem