Solution : https://service.sap.com/sap/support/notes/1521635 (SAP Service marketplace login required)
Key words :
shared memory area cl_bsp_wd_shm_area fails, free memory space, attribute gv_build_failed = 'x', area cl_bsp_wd_shm_area, shared memory, memory space, attribute gv_build_failed, area building, relevant version, transaction shmm
Related Notes :
1515572 | Setting up shared objects area CL_BSP_WD_SHM_AREA |
1326272 | Shared memory for design layer: Creation unsuccessful |
1281896 | High Memory Consumption and CRM Webclient |
1042618 | Shared memory for design layer after system restart |