SAP Message 26173 - Each long text record must be preceded by a text record

Diagnosis
You want to copy document info records from an external system to yourSAP System.
The sequential file you created in your external system does not meetthe specifications (see "Documentation of transferprogram").

Procedure
Correct the program in the source system that produces the sequentialfile.
Each long text record (record type 3) must be preceded by a text recordfor the document (record type 2).