We are trying to use BargainFinderMax REST API v3/offers/shop and /v4/offers/shop for southwest airlines (WN) but getting errors for the following requests in the CERT environment

We have tied both the old & new domain name endpoints (as per <https://developer.sabre.com/guides/travel-agency/developer-guides/api-endpoints>) but still throwing the error

```
New Endpoints:

https://api.cert.platform.sabre.com/v4/offers/shop

https://api.cert.platform.sabre.com/v3/offers/shop

```

```
Old Endpoints:

https://api-crt.cert.havail.sabre.com/v4/offers/shop

https://api-crt.cert.havail.sabre.com/v3/offers/shop

```

Request#1:

```
{
    "OTA_AirLowFareSearchRQ": {
        "MaxResponses": "10",
        "OriginDestinationInformation": [{
            "RPH": "1",
            "DepartureDateTime": "2022-08-19T00:00:00",
            "OriginLocation": {
                "LocationCode": "SFO"
            },
            "DestinationLocation": {
                "LocationCode": "LAX"
            },
            "TPA_Extensions": {
                "SegmentType": {
                    "Code": "O"
                }
            }
        }],
        "POS": {
            "Source": [{
                "PseudoCityCode": "xxxx",
                "RequestorID": {
                    "CompanyName": {
                        "Code": "TN"
                    },
                    "ID": "xxx.xx",
                    "Type": "x.xxx.x"
                }
            }]
        },
        "TravelPreferences": {
            "MaxStopsQuantity": 99,
            "TPA_Extensions": {
                "DataSources": {
                    "ATPCO": "Enable",
                    "LCC": "Disable",
                    "NDC": "Disable"
                },
                "NumTrips": {
                    "Number": 10
                }
            },
            "VendorPref": [{
                "Code": "WN"
            }]
        },
        "TravelerInfoSummary": {
            "AirTravelerAvail": [{
                "PassengerTypeQuantity": [{
                    "Code": "ADT",
                    "Quantity": 1
                }]
            }],
            "PriceRequestInformation": {
                "TPA_Extensions": {}
            },
            "SeatsRequested": [1]
        },
        "TPA_Extensions": {
            "IntelliSellTransaction": {
                "RequestType": {
                    "Name": "xxxITINS"
                }
            }
        },
        "Version": "3"
    }
}

```

Request#2:

```
{
    "OTA_AirLowFareSearchRQ": {
        "MaxResponses": "10",
        "OriginDestinationInformation": [{
            "RPH": "1",
            "DepartureDateTime": "2022-08-20T00:00:00",
            "OriginLocation": {
                "LocationCode": "SFO"
            },
            "DestinationLocation": {
                "LocationCode": "LAX"
            },
            "TPA_Extensions": {
                "SegmentType": {
                    "Code": "O"
                }
            }
        }],
        "POS": {
            "Source": [{
                "PseudoCityCode": "xxxx",
                "RequestorID": {
                    "CompanyName": {
                        "Code": "TN"
                    },
                    "ID": "xx.xx",
                    "Type": "x.xxx.x"
                }
            }]
        },
        "TravelPreferences": {
            "MaxStopsQuantity": 99,
            "TPA_Extensions": {
                "DataSources": {
                    "ATPCO": "Enable",
                    "LCC": "Disable",
                    "NDC": "Disable"
                },
                "NumTrips": {
                    "Number": 10
                }
            },
            "VendorPref": [{
                "Code": "WN"
            }]
        },
        "TravelerInfoSummary": {
            "AirTravelerAvail": [{
                "PassengerTypeQuantity": [{
                    "Code": "ADT",
                    "Quantity": 1
                }]
            }],
            "PriceRequestInformation": {
                "TPA_Extensions": {}
            },
            "SeatsRequested": [1]
        },
        "TPA_Extensions": {
            "IntelliSellTransaction": {
                "RequestType": {
                    "Name": "xxxITINS"
                }
            }
        },
        "Version": "3"
    }
}

```

Response#1:

```
{
    "groupedItineraryResponse": {
        "version": "6.6.1",
        "messages": [{
            "severity": "Info",
            "type": "SERVER",
            "code": "ASE032LPSCIL672.ATSE.CERT.ASCINT.SABRECIRRUS.COM",
            "text": "27040"
        }, {
            "severity": "Info",
            "type": "WORKERTHREAD",
            "code": "TRANSACTIONID",
            "text": "3620995504794847122"
        }, {
            "severity": "Info",
            "type": "DRE",
            "code": "RULEID",
            "text": "13292"
        }, {
            "severity": "Info",
            "type": "DEFAULT",
            "code": "RULEID",
            "text": "25238"
        }, {
            "severity": "Info",
            "type": "SCHEDULES",
            "code": "MSG",
            "text": "NO FLIGHT SCHEDULES FOR QUALIFIERS USED"
        }, {
            "severity": "Error",
            "type": "IF2",
            "code": "PROCESS",
            "text": "No complete journey can be built in IF2/ADVJR1."
        }, {
            "severity": "Error",
            "type": "ERR",
            "code": "ERR",
            "text": "Error during Processing"
        }],
        "statistics": {
            "itineraryCount": 0
        }
    }
}

```

Response#2:

```
{
    "groupedItineraryResponse": {
        "version": "6.3.0",
        "messages": [{
            "severity": "Info",
            "type": "SERVER",
            "code": "ASE032LPSCIL744.ATSE.CERT.ASCINT.SABRECIRRUS.COM",
            "text": "27035"
        }, {
            "severity": "Info",
            "type": "WORKERTHREAD",
            "code": "TRANSACTIONID",
            "text": "3623196258955057549"
        }, {
            "severity": "Info",
            "type": "DRE",
            "code": "RULEID",
            "text": "13292"
        }, {
            "severity": "Info",
            "type": "DEFAULT",
            "code": "RULEID",
            "text": "25238"
        }, {
            "severity": "Info",
            "type": "SCHEDULES",
            "code": "MSG",
            "text": "NO FLIGHT SCHEDULES FOR QUALIFIERS USED"
        }, {
            "severity": "Error",
            "type": "IF2",
            "code": "PROCESS",
            "text": "No complete journey can be built in IF2/ADVJR1."
        }, {
            "severity": "Error",
            "type": "ERR",
            "code": "ERR",
            "text": "Error during Processing"
        }],
        "statistics": {
            "itineraryCount": 0
        }
    }
}

```

Also, tested this using /v1/offers/shop/ in PROD environment using old endpoint and still see the same issue.

```
Endpoint: https://api.havail.sabre.com/v1/offers/shop, 

{
    "groupedItineraryResponse": {
        "version": "5.2.0",
        "messages": [{
            "severity": "Info",
            "type": "SERVER",
            "code": "ASE032LPSPIL9BE.IDM.SGDCPROD.SABRE.COM",
            "text": "27041"
        }, {
            "severity": "Info",
            "type": "WORKERTHREAD",
            "code": "TRANSACTIONID",
            "text": "3629312323318444028"
        }, {
            "severity": "Info",
            "type": "DRE",
            "code": "RULEID",
            "text": "15943"
        }, {
            "severity": "Info",
            "type": "DEFAULT",
            "code": "RULEID",
            "text": "17500"
        }, {
            "severity": "Info",
            "type": "SCHEDULES",
            "code": "MSG",
            "text": "NO FLIGHT SCHEDULES FOR QUALIFIERS USED"
        }, {
            "severity": "Error",
            "type": "IF2",
            "code": "PROCESS",
            "text": "No complete journey can be built in IF2/ADVJR1."
        }, {
            "severity": "Error",
            "type": "ERR",
            "code": "ERR",
            "text": "Error during Processing"
        }],
        "statistics": {
            "itineraryCount": 0
        }
    }
}

```

Same API call is working fine for other airline codes like Delta Airlines ('DL'), American Airlines ('AA'), United Airlines ('UA'), etc.

Can anyone share any insight on why this is happening and how can we fix this behaviour ?