allocation number equal to refference number

[lukkurylo]

Hi
requirement from the busines site is to set up copy control parameter to get allocation number (ZUONR) equal to refference number (XBLNR).
Other words, they want in FBL5N have view that allocation numer has the same value ass refference.

could you suggest / help hot to set up, please ? should i use VTFA ? 

[Stanislaw_Stefanowski]

Hello @lukkurylo ,

it depends on what the source document is for your billing document. If the source document is a sales order/contract, then VTFA is the correct transaction. On the header level of copy control, you can define determination rules for XBLNR and ZUONR fields:

Best regards

[lukkurylo]

ok i understand this, but what i should set up in allocation nr if i want get refference nr in this field ? In VTFA there is no this position... If i set up parameter E i will receive SD invoice nr

[Stanislaw_Stefanowski]

What number do you currently have in reference field and what is the source of this number?