problem with the fixed id on item level (tab Quantities/Dates)

Hi,

ich have a problem with the fixed id on item level (tab Quantities/Dates).

we have a report which creates purchase requisitions. Theses documentes have in standard the creation indicator realtime. For our process these documentes should behave similar to documentes which are created out of the material requirements planing. Therefore we modify these documente afterwards with the following coding:

eban-estkz = 'B'. "Bedarfsplanung "10.01.2014

eban-bmein = eban_tab-bmein.

modify eban

Afterwards these documentes have the creation indicator .material requirements planing but the problem is that after the modification of these documents the fixed id is set to read-only and could no longer be changed manually. These is necessary.

Besides: For manually created docuements the fixed id is changable also for documents created directly out of the material requirements planing. Also for the documents created out of the report before the modification is done the fixed id is changable. I do not understand why after the modification the fixed id is no longer changable. Obviously the modified document looks same like the document directly created out of the material requirements planing. ecept the fixed id (read only or not). Attached you find screenshouts for a doumente directly created out of the material requirements planing and a modified document.

Could somebody explain what went wrong and what could be done to solve these issue?

Thanks in advance.

Steve Malack