Export Planning Data API not working

Summary:

We are trying to export planning data from Oracle EPM, however when we execute the API the following error appears. Even when using the sample Body provided in the documentation here → :

"The content cannot be parsed as it does not conform to JSON syntax as per specification."

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

26.11.76

Code Snippet (add any code snippets that support your topic, if applicable):

Body Example:

{
  "exportPlanningData": false, 
  "formatPercentageAsPercent": true, 
  "gridDefinition": {
    "suppressMissingBlocks": true, 
    "suppressMissingRows": true, 
    "suppressMissingColumns": true, 
    "suppressMissingRowsNative": true, 
    "suppressMissingSuppressesZero": true,
    "suppressInvalidScenarioTps": true, 
    "suppressInvalidColumns": true, 
    "suppressInvalidRows": true, 
    "predictionSupportForDynCalcMbrs": true, 
    "autoCorrectSegments": true, 
    "povAxisDefinition": {
      "dimensions": ["HSP_View", "Scenario", "Version", "Product"],
      "members": [ "BaseData", "Plan", "Working", "P_160" ]