The data management routines detected an error during an input/output operation, which PL/I did not recognize. Subcode1 and Subcode2 provide VSAM diagnostic information; otherwise, they contain zeros. See the VSAM Macro Instruction manual for a description of the errors. Subcode1 indicates the I/O function involved:

• 0 - I/O function not identified
• 1 - GET
• 2 - PUT
• 3 - CHECK
• 4 - POINT
• 5 - ENDREQ
• 6 - ERASE
• 64 - OPEN
• 130 - GENCB of ACB
• 131 - GENCB of RPL
• 138 - SHOWCB of ACB
• 142 - TESTCB of ACB
• 146 - SHOWCB of block lengths

For MVS™ and VM, the value of subcode1 determines the type of VSAM return code information provided.

• Subcode1 0: VSAM return code information is not provided.
• Subcode1 1-63: VSAM Request Parameter List Feedback Word (RPLFDBWD) = xxxxyyyy.
• Subcode1 64: Open register 15 = xxxx. Open reason code = yyyy.
• Subcode1 128-192: Register 15 = xxxx. Register 0 = yyyy.

For Enterprise PL/I for z/OS, Subcode2 gives the following information:

• Register 15 = xxxx. Reason code = yyyy.

Note that PL/I terminology translates to VSAM terms as follows:

• PL/I UPDATE OPEN is equivalent to VSAM IN and OUT OPEN.
• PL/I OUTPUT OPEN is equivalent to VSAM OUT OPEN, but only inserts or additions are allowed.
• PL/I READ results in VSAM POINT to key, if specified, followed by VSAM GET.
• PL/I WRITE or LOCATE results in VSAM PUT NUP. For PL/I LOCATE, the associated VSAM PUT NUP occurs on the next PL/I I/O request.
• PL/I REWRITE results in implied read, if needed, followed by VSAM PUT UPD.
• PL/I DELETE results in implied read, if needed, followed by VSAM ERASE.
• PL/I WAIT EVENT I/O results in VSAM CHECK.