Predictika · Truck service body and chassis orders

An AI sales agent's steel service body order, checked before it goes out

An AI sales agent prepares an order for steel service bodies on Ram chassis, with a rack, a crane and loaded shelves. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published body, chassis and option limits and returns a verdict, every reason and the figures it computed.

Scope: Knapheide Ram steel service bodies: body model, Ram chassis fit, crane, rack and shelf limits, and stated body weight. See everything this validator covers

This validator models steel service body orders for Ram chassis built from the Knapheide Ram Steel Service Bodies literature, not just the scenarios shown below.

  • Body families and models — the 56 in. CA single and dual rear wheel, 60 in. CA single and dual rear wheel, 84 in. CA dual rear wheel, 108 in. CA dual rear wheel and 81 in. CA Ram ProMaster families; each of the 32 listed body models belongs to one family and has a listed weight.
  • Chassis fit — for each family, the Ram truck series (2500, 3500, 4500, 5500, or the ProMaster VF3L02), cab, wheelbase and chassis GVWR ratings the literature lists; chassis of 10,000 lb GVWR and under on single rear wheel families need a person to confirm the unloaded vehicle weight limits.
  • Options and weight — the 56 CA Ram mounting option (56 in. CA bodies only), the crane reinforcement kit limits (4,000 lb capacity, 16,000 ft-lb), rack capacities (utility 1,000 lb, overhead ladder 300 lb, side ladder 150 lb), the 250 lb shelf rating, and the stated total body weight against the listed model weights.

Any Ram steel service body order that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Knapheide publishes no price list, so this validator produces no price build-up or line-item quote), Ford and GM bodies, other Knapheide product lines, options not listed with limits in the literature, and payload calculations.

The AI sales agentBuilds the service body order from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

8 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A body model that belongs to one family and chassis listOnly with care
Each body model, family and chassis list is its own product rule; a rep can pick a model from the wrong family and nothing flags it unless that exact rule was written.		The family, model, truck series, cab, wheelbase and GVWR are in one request and checked together.
Wheelbase and GVWR that depend on truck series and cab within a familyOnly with workarounds
The valid wheelbase and GVWR change with three other choices (family, truck, cab), so they need lookup tables or dozens of conditional rules that grow with every new chassis.		Every chassis row from the literature is one fact; any combination is checked on every call.
A stated total body weight that must match the model weightsOnly with care
The stated figure is a free-entry field; a rule can compare it with the per-model weight times the number of bodies, but someone has to write and maintain it.		The stated weight travels with the order and is compared with the computed total on every call.
Crane capacity and moment, and shelf load limits that must hold together in one orderOnly with care
Each crane, rack and shelf limit is its own number in the literature; a rule has to be written for every one, and an order that breaks the crane and shelf limits at once is easily caught for one and missed for the other.		The crane capacity and moment, rack load and shelf load are checked together against the published limits on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the order is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The literature says chassis of 10,000 lb GVWR and under are subject to unloaded vehicle weight limits; a person must confirm the body and its options fit within them.
2The 56 CA Ram mounting design option is listed only for 56 inch CA bodies on Ram 56 CA trucks.
3The body model on the quote is not offered in the selected cab-to-axle (CA) and rear wheel family; each Knapheide Ram service body model belongs to one CA and wheel family.
4The Ram truck series and cab on the quote are not a chassis listed for this body family.
5The chassis wheelbase on the quote is not the wheelbase listed for this truck series and cab with this body family.
6A chassis GVWR of 14,000 lb is not a rating listed for this truck series and cab with this body family.
7The crane reinforcement kit supports a crane of up to 4,000 lb capacity and 16,000 ft-lb maximum; the quote has a 4,001 lb, 16,000 ft-lb crane.
8The crane reinforcement kit supports a crane of up to 4,000 lb capacity and 16,000 ft-lb maximum; the quote has a 4,000 lb, 16,001 ft-lb crane.
9The rack on the quote has a capacity of 1,000 lb, but the quote loads it with 1,001 lb.
10The rack on the quote has a capacity of 150 lb, but the quote loads it with 151 lb.
11The rack on the quote has a capacity of 300 lb, but the quote loads it with 301 lb.
12Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 251 lb.
13The quote states a total body weight of 4,000 lb, but the bodies on it weigh 4,173 lb in total.
14The quote states a total body weight of 4,500 lb, but the bodies on it weigh 4,173 lb in total.
15The crane reinforcement kit supports a crane of up to 4,000 lb capacity and 16,000 ft-lb maximum; the quote has a 5,000 lb, 0 ft-lb crane.
16The rack on the quote has a capacity of 300 lb, but the quote loads it with 400 lb.
17Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 300 lb.
18The quote states a total body weight of 4,173 lb, but the bodies on it weigh 5,130 lb in total.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Two bodies on Ram 5500 with a crane: An order for two 60 in. CA bodies on Ram 5500 chassis with a crane and loaded shelves

    
The agent's request. Please quote 2 Knapheide 6108D54 steel service bodies (60 in. CA, dual rear wheel) on Ram 5500 regular cab chassis with a 144.6 in. wheelbase and an 18,000 lb GVWR, with a crane reinforcement kit for a 5,000 lb, 18,000 ft-lb crane and shelves loaded to 260 lb. The quote states a total body weight of 2,612 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Crane above the reinforcement kit limits. The crane reinforcement kit supports a crane of up to 4,000 lb capacity and 16,000 ft-lb maximum; the quote has a 5,000 lb, 18,000 ft-lb crane.
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  • Shelf loaded above 250 lb. Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 260 lb.
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2. Two bodies on Ram 5500 with a crane: The agent resubmits after fixing the errors

    
The agent's request. Please quote 2 Knapheide 6108D54 steel service bodies (60 in. CA, dual rear wheel) on Ram 5500 regular cab chassis with a 144.6 in. wheelbase and an 18,000 lb GVWR, with a crane reinforcement kit for a 4,000 lb, 16,000 ft-lb crane and shelves loaded to 260 lb. The quote states a total body weight of 2,612 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Shelf loaded above 250 lb. Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 260 lb.
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3. Two bodies on Ram 5500 with a crane: The agent resubmits after fixing the errors

    
The agent's request. Please quote 2 Knapheide 6108D54 steel service bodies (60 in. CA, dual rear wheel) on Ram 5500 regular cab chassis with a 144.6 in. wheelbase and an 18,000 lb GVWR, with a crane reinforcement kit for a 4,000 lb, 16,000 ft-lb crane and shelves loaded to 250 lb. The quote states a total body weight of 2,612 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 2 body(ies) at 1,306 lb each, 2,612 lb in total.
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4. Three 84 in. CA bodies on Ram 4500: A fleet order for three 84 in. CA flip top bodies on Ram 4500 crew cab chassis, with an overhead ladder rack

    
The agent's request. Please quote 3 Knapheide 6132D54F steel service bodies (84 in. CA, dual rear wheel) on Ram 4500 crew cab chassis with a 173.5 in. wheelbase and a 16,500 lb GVWR, with an overhead ladder rack loaded to 320 lb and shelves loaded to 200 lb. The quote states a total body weight of 5,130 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Wheelbase not listed for this chassis. The chassis wheelbase on the quote is not the wheelbase listed for this truck series and cab with this body family.
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  • Rack loaded above its capacity. The rack on the quote has a capacity of 300 lb, but the quote loads it with 320 lb.
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5. Three 84 in. CA bodies on Ram 4500: The agent resubmits after fixing the errors

    
The agent's request. Please quote 3 Knapheide 6132D54F steel service bodies (84 in. CA, dual rear wheel) on Ram 4500 crew cab chassis with a 197.4 in. wheelbase and a 16,500 lb GVWR, with an overhead ladder rack loaded to 300 lb and shelves loaded to 200 lb. The quote states a total body weight of 5,130 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 3 body(ies) at 1,710 lb each, 5,130 lb in total.
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6. Four single rear wheel bodies: An order for four 60 in. CA single rear wheel bodies on Ram 3500 chassis with the 56 CA mounting option

    
The agent's request. Please quote 4 Knapheide 6108F steel service bodies (60 in. CA, single rear wheel) on Ram 3500 regular cab chassis with a 143.3 in. wheelbase and a 10,000 lb GVWR, with the 56 CA Ram mounting option. The quote states a total body weight of 4,800 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • 56 CA Ram mounting option on another family. The 56 CA Ram mounting design option is listed only for 56 inch CA bodies on Ram 56 CA trucks.
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  • Stated body weight differs from the model weight. The quote states a total body weight of 4,800 lb, but the bodies on it weigh 4,956 lb in total.
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  • Light chassis weight limits. The literature says chassis of 10,000 lb GVWR and under are subject to unloaded vehicle weight limits; a person must confirm the body and its options fit within them.
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7. Four single rear wheel bodies: The agent resubmits after fixing the errors

    
The agent's request. Please quote 4 Knapheide 6108F steel service bodies (60 in. CA, single rear wheel) on Ram 3500 regular cab chassis with a 143.3 in. wheelbase and a 10,000 lb GVWR. The quote states a total body weight of 4,956 lb. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Light chassis weight limits. The literature says chassis of 10,000 lb GVWR and under are subject to unloaded vehicle weight limits; a person must confirm the body and its options fit within them.
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  • Order summary. 4 body(ies) at 1,239 lb each, 4,956 lb in total.
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8. Four single rear wheel bodies: The agent resubmits after fixing the errors

    
The agent's request. Please quote 4 Knapheide 6108F steel service bodies (60 in. CA, single rear wheel) on Ram 3500 regular cab chassis with a 143.3 in. wheelbase and a 12,000 lb GVWR. The quote states a total body weight of 4,956 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 4 body(ies) at 1,239 lb each, 4,956 lb in total.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares an order for steel service bodies on Ram chassis, with a rack, a crane and loaded shelves. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published body, chassis and option limits and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote 2 Knapheide 6108D54 steel service bodies (60 in. CA, dual rear wheel) on Ram 5500 regular cab chassis. The rest of the request is on screen. The quote states a total body weight of 2,612 lb.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with two findings, all in one answer. The crane reinforcement kit supports a crane of up to 4,000 lb capacity and 16,000 ft-lb maximum; the quote has a 5,000 lb, 18,000 ft-lb crane. Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 260 lb.
    6. 
      
  6. The validator returned two blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
    7. 
      
  7. What this shows: for crane capacity and moment, and shelf load limits that must hold together in one order, a rules-based CPQ is error-prone for this.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the crane capacity to 4,000 lb and the crane moment to 16,000.
    10. 
      
  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. Knapheide compartment shelves are rated for 250 lb; the quote loads a shelf with 260 lb.
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  12. One finding cleared. Still blocking: shelf loaded above 250 lb.
    13. 
      
  13. The agent resubmits once more.
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  14. The revised request. It changes the heaviest shelf load to 250 lb.
    15. 
      
  15. It calls the validator once more.
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  16. This time the validator clears it.
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  17. The earlier finding is cleared, and the validator's figure matches the quote.
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  18. Two problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    19.