Fixed Assets : Add Asset REST API is going into error

Summary:

We are trying to import the assets from the source system for which we are planning to leverage below REST API with operation name as

processTransaction-addAsset but we are getting an error. Attaching the request and response payload for the reference. Can somebody help to understand what must be going wrong?

REST API - /fscmRestApi/resources/11.13.18.05/erpintegrations

Request Payload -

{    "OperationName": "processTransaction-addAsset",    "ParameterList": "{P_BOOK_TYPE_CODE: 'US CORP BOOK 1',PX_ASSET_NUMBER: NEWADD0726,P_DESCRIPTION: Dell Inspiron,P_MANUFACTURER_NAME: Dell,P_MODEL_NUMBER: 1500,P_ASSET_TYPE: CAPITALIZED,P_CATEGORY_ID: 21,P_DATE_PLACED_IN_SERVICE: '2008-03-31', P_COST : 15000,P_TRX_ATTRIBUTE1:d, P_TRX_ATTRIBUTE2:d,P_D_TRX_ATTRIBUTE1:d,P_D_TRX_ATTRIBUTE2:d,P_DISTRIBUTION_ID_TBL:'1', P_ASSIGNED_TO_TBL:'1',P_UNITS_ASSIGNED_TBL:'1',P_TRANSACTION_UNITS_TBL:'1',P_EXPENSE_CCID_TBL:'300100071633798',P_LOCATION_CCID_TBL: '300100071633789'}"}