FS10N - Various questions. Only Gurus!

Question

Dear Gurus,
I have the following question for you:
When I log into FS10N and enter a G/L account number for a given company code, I have the following problem with the following field called: ZUONR or 'Assignment'.
The system reacts very strangely and proposes randomly various documents types he chooses freely such as:
1- Material Number
or
2- Controlling order
or
3- Sales invoice number
or
4- Date which appears in different formats such as 20090122
As you can see, there is no consistency of value as they change for no apparent reasons.
Why is the system behaving this way?
1- Is there a connection with a type of document?
2- Is there a connection with different G/L accounts?
3- Is this happening when the system posts sales invoices?
4- When we set for G/L accounts "Sort Key" to be "Material Number" and post controlling closing procedures for PP, the system enters in this field "Order Number" from CO instead?
We also can see that in FS10N
Your help is greatly appreciated on this.
Regards
Chris

Answer 1

Hi,
For SD to FI account posting, this is a configuration of copy control where in you will specify what number needs to be updated in this field.  The following options are available.
A   Purchase order number                                     
B   Sales order number                                        
C   Delivery number                                           
D   External delivery number                                  
E   Actual billing document number                            
F   External delivery no. if avaialable, otherwise delivery no.
Thanks,
Krish.