SAP Message 26164 - Each text record must be preceded by a document info record

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

Procedure
Correc the program in the source system that produces the sequentialfile.
Each description record (record type 2) must be preceded by a documentheader record (record type 1).