BTP CI-Invalid request received by HTTP proxy: An HTTP line is larger than 8192 bytes.

[satsunros]

Dear Community.

I am calling ODATA API( API_SALES_ORDER_SRV) from BTP CI via Cloud Connector.
It worked very well while retrieving sales Order information from the API.

Now, I have added addtional entity structure(to_SubsequentProcFlowDocItem) to retreive some Invoice  information from the API. while calling the API now, I get exception always with this entity.

Exception : Invalid request received by HTTP proxy: An HTTP line is larger than 8192 bytes.

Coudl you please provide your inputs on this issue. Thank you very much.

With Best REgards,

Sateesh N

[Ryan-Crosby]

Sounds like your URL is longer than 8,192 characters which leads to the problem.

[satsunros]

Thank you Ryan for your input. the same URL  : http://host:port/sap/opu/odata/sap/API_SALES_ORDER_SRV
Resource Path : A_SalesOrder(SalesOrder='${property.p_VBELN}')

Operation Details: READ( GET)
it worked with same URL very well with all  necessary entities which I used as so far.
However when I added addtional entity, I received the error which I have mentioned above.

Thank you

Sateesh

[Ryan-Crosby]

What is the length of the URL that is being called if you extract it from the trace?

[satsunros]

Hello Ryan, yes it's right. length of the URL is more than 8192. now URL length is around 8273. How we could manage , if It required to add more entities?

[Ryan-Crosby · Accepted solution]

You would need to evaluate what you are doing and find a way to trim your URL below the 8,192 bytes threshold because it's a hard limit for your proxy, or you can try without the proxy but I think you would experience the same issue.

Regards,

Ryan Crosby

[Kishan_D]

Hello Sateesh,

May I request you to check SAP Note 3146809 - Error "HTTP header is larger than 8192 bytes" using Cloud Integration HTTP Receiver Adapte... and see if only the required request headers are configured. Removing any unwanted headers may help bring down the header size to <8Kb.

Regards, Kishan 

[satsunros]

Hi Kishan. Thank you for your input. yes I already read it. This SAP Note is relevant  for HTTP Receiver Adapter and not for OData Receiver Adapter.

and exception is also littel different than this note exception : Invalid request received by HTTP proxy: An HTTP line is larger than 8192 bytes

The actual issue is, upto some level only  I could able to use the entities to retrieve info from API, if I added addtional entities, I get this error.
If the issue is limitations of size, then where to and how to extend size ?

Thank you 

Sateesh

[satsunros]

Hello Community, once again I am following upon this topic if I can see any addtional inputs/hints here on this issue