PH21070: Message BAQR0558E is reported when a message greater than 4KB in length is sent to Db2.

APAR status

• Closed as new function.

Error description

• When using the z/OS Connect EE REST client service provider to
  invoke an API on a Db2 endpoint, the following message was
  reported:
  BAQR0558E: The remote service invocation failed with response
             message: HTTP 406 Not Acceptable and response body:
             {"StatusCode":406,"StatusDescription":
             "HTTP TRANSFER-ENCODING header field is not
             supported. Error Location:nn:nn"}
  
  It was found that the above failure only occurred when the
  message length was greater than 4KB.
  
  Additional search words: msgBAQR0558E msgBAQR0558 BAQR0558 chunk
  chunks chunked BAQR0562E msgBAQR0562E BAQR0562 msgBAQR0562
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of z/OS Connect EE V3 and the REST *
  *                 client service provider.                     *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message BAQR0558E is reported when a    *
  *                      message greater than 4KB in length is   *
  *                      sent to Db2.                            *
  ****************************************************************
  The z/OS Connect EE REST client service provider implementation
  automatically chunks data greater than 4KB in length and adds a
  Transfer-Encoding field with a value of "chunked". Db2's REST
  implementation does not support chunking, resulting in the
  reported failure.
  

Problem conclusion

Temporary fix

Comments

• z/OS Connect EE has been updated and a new allowChunking
  attribute has been added to the
  zosconnect_zosConnectServiceRestClientConnection element to
  allow chunking to be disabled for a REST client service provider
  connection. Setting allowChunking="false" prevents chunking to
  the REST client endpoint. The default is allowChunking="true".
  
  The fix for this APAR is expected to be delivered by the PTF for
  z/OS Connect EE V3.0.33.0 (PH24143).
  

APAR Information

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

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

Fix information

• Fixed component name

  Z/OS CONNECT EE

• Fixed component ID

  5655CE300

Applicable component levels