FBL5N、FBL3N、 FBL1N ALV新增欄位顯示

往會計憑證行專案fbl3n、fagll03新增BKPF或者BSEG表裡有的科目，直接在後臺配置之後，前臺查詢結果的佈局中放出欄位即可。

如果是BKPF和BSEG沒有的欄位，需要BTE增強。

You can use RFPOS structure and BTE(1650) to add new fields to show in FBLXN tcodes.

Solution: We can use openFI 1650 (BTE) to add any fields to ALV output list in FBL3N/FBL1N/FBL5N at the same time.

SAP has already provided the place for Open FI BTE (1650) in the standard program that will trigger the custom function module assigned to the event 1650 in FIBF T-code.

FBL3N: G/L Account Line Item Display

FBL1N: Vendor Line Item Display

FBL5N: Customer Line Item Display

具體參考如下log：

https://blogs.sap.com/2012/08/30/enhancing-sap-standard-transactions-fbl3nfbl1nfbl5n-with-extra-fields-in-the-output-list-via-bte/