SAP Note 25732 - Scheduling MD01/CO01/CO02: Performance or Error

Symptom:

Different symptoms can occur:
1. Program termination BCD_FIELD_OVERFLOW in SAPLCRK1
2. Poor performance in MRP, MPS, order transactions
During total planning runs that include scheduling and capacity planning, excessive run-times occur: in the spool list of the total planning job a run-time of over 7 minutes for some materials is necessary. If you carry out single-item planning for these materials, the programm runs correctly.
3. Incorrect scheduling results
4. Loop in the requirements planning run (MRP). It jumps back and fort between 2 programs, SAPLCRK1 and SAPLSCAL (visible in the system overview).

Additional key words

MRP, MDBT, requirements planning
MD01: performance (interval of available capacity)
CO01, CO02
Loop
SAPCRK1, SAPLSCAL

Cause and prerequisites

The error ONLY occurs, if the available capacity of the work center is split up into time intervals (see active version in the capacity header of the work center).
The internal table XKAPA, which should contain the intervals in sorted order, is unsorted.

Solution
Table XKAPA must be sorted in the program.