Solution : https://service.sap.com/sap/support/notes/1042766 (SAP Service marketplace login required)
Key words : 
terms elka te610 reason, bapi_mtrreaddoc_upload function module, meter reading documents, attached correction instructions, isu_s_meterread_change function module, interval check, side effect, solution import, relevant add-, support package
Related Notes : 
       
| 1361123 | MRO: Meter reading type from schedule record not considered | 
| 891061 | EL28 interval check and suppression logic | 
| 767622 | EnterReadingDocs(MTRREADDOC): MR interval not considered | 
| 636529 | EASIBI: Reading interval check cannot be suppressed |