Sub-inventory field is greyed out in Stock Locator in Debrief Form

Hi,

I have encountered following problem with Debrief form in Depot repair (OeBS 12.2.5)

We are using locators for items in different organizations. In attachment I am sending you the print screen of how it looks like when trying to write in the locator in Debrief form for any specific item (after clicking on Locator flexfield in Debrief form- Material fan).

We are allowed to write in location (Lokasjon in print screen) and organization (Organisasjon in print screen) but not allowed to write in sub-inventory (Lager in print screen)- the field is greyed out even though sub-inventory field in main Debrief form is available. The stock locator has to consist of all 3 settings (location, sub-inventory and organization) in order to be valid.