Why is swagger validator failing here

I can't seem to figure out why swagger validation is failing What is strange is that if I add more than one path the validation only complains about the last one. Then if I remove the last one it starts complaining about the one above it. When working in the swagger editor then it all seems to validate. The swagger document is as follows: ``` { "swagger":"2.0", "info":{ "version":"0.0.1", "title":"Bla API" }, "schemes":[ "https" ], "produces":[ "application/json" ], "host":"rest.bla.com", "basePath":"/api/v2/fleet", "paths":{ "/{organisation_id}/access_groups":{ "get":{ "tags":[ "Access Group" ], "summary":"Get access groups\n", "description":"Gets a list of 'access_group' objects based on the provided search criteria\n", "parameters":[ { "in":"path", "name":"organisation_id", "required":"true", "type":"string" }, { "name":"term", "in":"query", "required":"false", "type":"string" }, { "name":"take", "in":"query", "required":"true", "type":"integer", "format":"int32" }, { "name":"skip", "in":"query", "type":"integer", "format":"int32", "required":"true" }, { "name":"order", "in":"query", "type":"string" } ], "responses":{ "403":{ "description":"Permission Denied", "schema":{ "$ref":"#/definitions/error" } }, "200":{ "description":"OK", "schema":{ "type":"object", "properties":{ "data":{ "type":"array", "items":{ "$ref":"#/definitions/access-group-response" } }, "pagination":{ "$ref":"#/definitions/pagination" } } } } } } } }, "definitions":{ "access-group":{ "description":"an object which provides the ability to grant access to specific assets\n", "properties":{ "name":{ "type":"string" } } }, "access-group-response":{ "properties":{ "data":{ "$ref":"#/definitions/access-group" }, "links":{ "type":"array", "items":{ "$ref":"#/definitions/link" } } } }, "error":{ "type":"array", "items":{ "type":"object", "properties":{ "type":{ "type":"string" }, "code":{ "type":"string" }, "message":{ "type":"string" }, "key":{ "type":"string" } } } }, "link":{ "properties":{ "href":{ "type":"string" }, "rel":{ "type":"string" } } }, "pagination":{ "properties":{ "page":{ "type":"number", "format":"int32" }, "total":{ "type":"number", "format":"int32" } } } } } ``` while the validation error is as follows: ``` { "schemaValidationMessages":[ { "level":"error", "domain":"validation", "keyword":"oneOf", "message":"instance failed to match exactly one schema (matched 0 out of 2)", "schema":{ "loadingURI":"http://swagger.io/v2/schema.json#", "pointer":"/definitions/parametersList/items" }, "instance":{ "pointer":"/paths/~1{organisation_id}~1access_groups/get/parameters/0" } }, { "level":"error", "domain":"validation", "keyword":"oneOf", "message":"instance failed to match exactly one schema (matched 0 out of 2)", "schema":{ "loadingURI":"http://swagger.io/v2/schema.json#", "pointer":"/definitions/parametersList/items" }, "instance":{ "pointer":"/paths/~1{organisation_id}~1access_groups/get/parameters/1" } }, { "level":"error", "domain":"validation", "keyword":"oneOf", "message":"instance failed to match exactly one schema (matched 0 out of 2)", "schema":{ "loadingURI":"http://swagger.io/v2/schema.json#", "pointer":"/definitions/parametersList/items" }, "instance":{ "pointer":"/paths/~1{organisation_id}~1access_groups/get/parameters/2" } }, { "level":"error", "domain":"validation", "keyword":"oneOf", "message":"instance failed to match exactly one schema (matched 0 out of 2)", "schema":{ "loadingURI":"http://swagger.io/v2/schema.json#", "pointer":"/definitions/parametersList/items" }, "instance":{ "pointer":"/paths/~1{organisation_id}~1access_groups/get/parameters/3" } } ] } ```