Billing Document Posted in Current year, Accounting Document Posted in Previous year

[SM1970]

Dear Friends,

Intercompany Billing  Document Posted in current year i.e 2025, where as Accounting document was posted in 2021. We are in ECC 6.0

Please help me what are the settings that need to checked or T.codes which needs to be investiaged . 

All the help will be greatly apprecited.

Regards

Sridhar

[Lakshmipathi]

Please share the document flow screen shot from the respective sales order and also screen shot from the Accounting Document

With standard configuration, this will not happen and seems, some custom logic is not working as expected.