1759226 - HTTP 400 Request too big in PI | SAP Knowledge Base Article

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1759226 - HTTP 400 Request too big in PI


  • Messages fail in a Process Integration (PI) system, or in a sender/receiver system involved in a PI scenario, with the error below:
  • "Error while sending by HTTP (error code: 400, error text: Bad Request)  (See attachment HTMLError for details)".


  • In the attachment HTMLError the error "request too big" is listed.
  • This error also occurs in the ICM trace.




  • PI Release Independent
  • SAP NetWeaver
  • SAP Process Integration


SAP NetWeaver 7.0 ; SAP NetWeaver 7.3 ; SAP Process Integration all versions ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; banking services from SAP 6.0


HTTP_PLG, http_plg_mt.c, Process Integration 7.0, PI 7.0, PI 7.01, PI 7.02, Process Integration 7.10, PI 7.10, Process Integration 7.11, PI 7.11, Process Integration 7.30, PI 7.30, Process Integration 7.31, PI 7.31, Process Orchestration 7.40, PI 7.40, PO 7.40, Process Orchestration 7.50, PI 7.50, PO 7.50, NetWeaver, XI, AEX , KBA , BC-XI-IS , Integration Server , Problem

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