Infor LN GenAI Assistant - Issue with Custom Tool for Sales (OData/REST response parsing)

Question

Hi everyone,

I am currently working on a GenAI Factory project for Infor LN CE (using the GenAI 2026.x User Guide ). I have successfully set up a custom agent, but I am struggling with the Sales domain.

My Environment:

* ERP: Infor LN (Integration Guide v2025.10 followed ).
* Gateway: ION API Suite InforLNAPI is fully indexed and pointing to the TRN environment.
* Setup: REST Service Management (ttmtm6120m000) is active for tdapi.slsSalesOrder.

Success Story (Purchasing):I created a tool for Purchasing (tdapi.purPurchaseOrder). It works perfectly: the agent can analyze 322 purchase orders and generate a "Top 3 Suppliers" table with total amounts and volume percentages.

The Issue (Sales & Customers):Since standard LN Agents only cover Projects, Contracts, Quality, and Procurement , I am building a custom tool for Sales using the following source:

* Path: LN/lnapi/odata/tdapi.slsSalesOrder/Orders.
* Goal: Retrieve the "Top 5 Customers by volume in 2025".

Despite the tool being enabled and assigned to the agent, the Assistant often returns "Technical difficulties" or claims "No tool available".

Observations from "Tool History":The OData JSON response seems to be retrieved by the Assistant, but the LLM (Claude Sonnet 4.5/3.7 ) fails to parse the sales order metadata correctly, unlike what it does for the purchasing service.

Questions:

* Has anyone successfully implemented a custom tool for Sales Orders in LN?
* Are there specific API Response Instructions or schema hints needed to help the LLM identify fields like TotalAmount or SoldToBusinessPartner in the Sales OData stream?
*

Thanks in advance for your insights!

Yacine Ait Maamar · Answer

Hi Fabiano, Thanks for getting back to me! To answer your points: * KB2310080 & Postman: Yes, everything is validated. The REST service is active, and I get a successful JSON response in Postman with all the expected order data. * The "Tool History" Mystery: Interestingly, I cannot get any logs in the Tool History when using my custom Sales agent. However, for the standard Purchasing tool, the history works perfectly and I can see the LLM reasoning. This lack of logs for the custom tool makes debugging very difficult. It feels like the Assistant is "skipping" the tool call or failing to parse the metadata before it even reaches the execution log. Since you have a working setup for Sales Orders: * Would you mind sharing a snippet of your "API Request" and "API Response" instructions? * Did you have to add specific hints to help the LLM identify fields like TotalOrderAmountInOrderCurValue or OrderDate? Any screenshots or guidance on your tool configuration would be a huge help! Best regards,Yacine

Fabiano Silva · Answer

@Yacine Ait Maamar ,

1 - Yes, I do.

2 - My response from Sales order API (get)

Do you did the steps from KB2310080 to active the API Rest for your enviroment?

Do you tried to do the same request in Postman?

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