Dear, Jolin.
I suggest you not to change anything in configuration "Set the effectsof the update types on the position components" as it already configured for all simple and standart processes.
If you want to uderstand how it could help you - play with configuration in sandbox.
In order to know what Position Change Category does - see this table TRLTS_PMCAT. There you can find:
- Position change category - which you assign to update type.
- Two components - which can be changed by Position change category
- Rules - that tell you what components are changed and how.
- Discription and other fields.
As concerns update type DBT_E001 ans similar Derived business transactions update types - you won't see any configuration as position change category is predefined - see the table above - position change category E001.
in SE2000, it is incoming payment, which is payment inflow, why it is position outflow? what does position inflow mean?
Incoming payment means - money inflow because you sell your security. Position outflow means - your security is sold
what does "post negative purchase value" 1010 mean? for MM1100+, it is used in borrowing of a fixed term deposit.
negative means you owe somebody. somebody gave you money and you have to return it some day.
positive means you gave somebody money.