I have gone through several threads related to the same before posting.
My query here is I want to use reference key 1 reference key 2 and reference key 3 during posting of the vendor and customer invoices and G/L postings as well.
The same maintained during the document posting should reflect in the respective reports like FBL1N and FBL5N and FBL3N.
To achieve the same I have Maintained the above fields optional in all the field status groups which we are using in PRODUCTION through T-code: OBC4, in addition to this I have also maintained reference key 1 and reference key 2 and reference key 3 setting in the T-code: OB32.
Still no luck. I really appreciated any kind of help on this.