Description
Plausibility check of the billed quantity against the start date andend date of an invoice item. Check to see whether quantity is too high.

Output
Possible errors in determining quantity (ISH_GET_QUANTIY_SERVICES)
Code Cause
01 admission date later than start date of invoice item
02 admission date later than discharge date
03 start date of invoice item later than end date
04 discharge date earlier than end date of invoice item
05 invalid institution
06 incorrect calculation formula