Partial input for TGET received by TSO

Problem statement: A TSO application program receives partial input for the TGET macroinstruction.
Common symptoms: The TSO application program does not receive the entire data-stream buffer from a device. A partial buffer from a device will cause the application to enter a wait state. If the host application program then issues a second TGET, the second section of the buffer is returned to the host application program before processing for the first TGET is completed.
Probable cause: The TSO application issued the set full-screen mode (STFSMODE) macroinstruction without specifying the NOEDIT option. The error occurs most often after the application program sends a read partition query (RPQ) to the device. Many newer devices return the attribute byte X'1E' that is returned in the RPQ entry. TSO interprets the X'1E' as an end-of-input field mark. The NOEDIT option of the STFSMODE macroinstruction prevents TSO VTAM® from validating the input data. This causes the entire buffer to be returned to the application program.
User response: Verify the options on the STFSMODE macroinstruction. If STFSMODE is correct, see Incorrect output problems for more information.