PI82231: DFHPI1009 JSON TO DATA TRANSFORMATION FAILED. A CONVERSION ERROR (OUTPUT_OVERFLOW) OCCURRED

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CICS JSON Not Correctly Converting Character N with Tilde.
  A CICS COBOL application issues a WEB OPEN  as a client.  The
  response data contains a character N with a tilde.  The data
  conversion process is adding a byte x'31' causing a conversion
  error (output_overflow).  Which results in getting message.
  .
  DFHPI1009 JSON TO DATA TRANSFORMATION FAILED. A CONVERSION
  ERROR (OUTPUT_OVERFLOW) OCCURRED WHEN CONVERTING FIELD FOR
  JSONTRANSFRM
  .
  .
  Additional Symptom(s) Search Keyword(s): KIXREVSVR
  

Local fix

• Change application/json to application/json; charset=utf-8 for
  the accept header.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Incorrect CCSID used for WEB CONVERSE   *
  *                      response data containing JSON.          *
  ****************************************************************
  * RECOMMENDATION: .                                            *
  ****************************************************************
  A WEB CONVERSE command is used retrieve JSON from a remote
  server which contains a double byte UTF-8 character.  The HTTP
  Content-Type header does not specify a charset.
  
  In the absence of a charset value CICS defaults to ISO-8859-1.
  This causes the JSON to be put into the container specified with
  CCSID(333).
  
  When the application retrieves the data it will be converted
  from ISO-8859-1 to the application's code page which will result
  in a misinterpretation of the double byte character.
  
  In the customer's case the container was passed to DFHJSON which
  failed with a DFHPI1009 OUTPUT_OVERFLOW conversion error.
  
  Keywords: msgDFHPI1009 PI1009 US-ASCII
  

Problem conclusion

• DFHWBCL has been modified so that if a Content-Type header
  specifies application/json and does not give a charset, CICS
  assumes the body is in UTF-8. This adheres to the RFC7159 (for
  JSON) which states that the default codepage for JSON is
  UTF-8.
  

Temporary fix

Comments

APAR Information

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

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

  UI48999 UI49000

Modules/Macros

• DFHWBCL
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R000 PSY UI49000

     UP17/07/22 P F707

• R100 PSY UI48999

     UP17/08/02 P F707

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.