As of Release 3.0D some of the IDOC types are being extended. Thismeans that in some IDOC types additional segments and fields willappear. It is important that these new fields are not sent in messagesthat were reduced before 3.0D became available. Therefore the extendedsegments and fields must be written to the TBD21 table (ALE: IDOCreduction).
The XPRABD21 program is responsible for this.
Data affected: TBD21.
The following sources of errors are possible: