A Structured Append character is used to indicate that the symbol is part of a Structured Append sequence.
Data Matrix Structured Append contains file identificator that allowing 64516 different file identifications. The purpose of the file identification is to increase the probability that only logically linked symbols are processed as part of the same message.
Up to 16 ECC 200 symbols may be appended in a structured format.
Please see example here.
System.Object
 Vintasoft.Barcode.BarcodeInfo.ValueItemBase
   Vintasoft.Barcode.BarcodeInfo.NonDataFlagValueItem
     Vintasoft.Barcode.BarcodeInfo.StructuredAppendCharacter
       Vintasoft.Barcode.BarcodeInfo.DataMatrixStructuredAppendCharacter
Target Platforms: .NET 10; .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5
DataMatrixStructuredAppendCharacter Members
Vintasoft.Barcode.BarcodeInfo Namespace
StructuredAppendCharacter