Solution : https://service.sap.com/sap/support/notes/990288 (SAP Service marketplace login required)
Key words :
internal service request, isr_special_data_get function module, long runtimes occur, terms pcr reason, zisr index id, short text ' index, table displayed underneath, extensions index, bdsphio24 table, select data
Related Notes :
| 1049057 | ISR documentation - "ISR Cookbook" |