PK07523: INVALID DATA ON WEB BROWSER MAY OCCUR WHEN USING THE CICS 3270 BRIDGE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Web browser output fields may be missing or contain invalid
  data when using the CICS 3270 Bridge.  The same application
  did not have the problem in a native 3270 environment.
  
  The problem is wcc_char in DFHBRTB is checked to see if FRSET
  has been specified (x'01') bit.  In some cases it may not
  have been initialized properly and residual data can be
  checked.  If the FRSET bit is ON then all the MDT (Modified
  Data Tag) bits on the   screen (bridge buffer) will be turned
  OFF.  MDT bits can be turned OFF validly by using the FRSET
  option on the SEND MAP, but in this case the problem is due
  to the value not being initialized properly.
  
  Additional Keywords:
  attr_reset_mdt frset_kx
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: Data is sometimes missing when EXEC     *
  *                      CICS RECEIVE is issued over the CICS    *
  *                      Web Bridge.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An EXEC CICS RECEIVE is issued over the CICS Web Bridge. Some
  of the modified fields which should be returned are missing.
  This can happen when the EXEC CICS RECEIVE is preceded by an
  EXEC CICS SEND MAP or EXEC CICS RECEIVE MAP.
  Both MAP commands cause the content of the bridge buffer to
  be updated. Part of this process involves resetting the MDT
  (modified data tags) of all fields if this is required.
  This should only happen if the MAP command includes the FRSET
  option. When FRSET is present a flag is set by DFHBRTB to
  indicate that all modified data tags are reset. However, this
  flag is never initialized and if it is randomly on and FRSET is
  not present on the MAP command, the modified data tags are
  invalidly reset. This leads to the failure of the subsequent
  EXEC CICS RECEIVE command.
  
  ADDITIONAL KEYWORDS :- ATTR_RESET_MDT WCC_CHAR
  

Problem conclusion

• DFHBRTB has been changed to initialize the flag byte which
  includes the reset MDT flag.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PK07521

• APAR is sysrouted TO one or more of the following:

  UK05035

Modules/Macros

•    DESBRTB  DFHBRTB
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK05035

     UP05/07/07 P F507

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.