dynamically expand API output

Your sample JSON is malformed (extra ] at position 1375).  Please provide properly formed JSON.

let
    Source = Json.Document("
    
{
""data"": {
""planData"": [
{
""planId"": 123,
""name"": ""test1"",
""planType"": ""plan"",
""planCostingType"": ""with projects"",
""planYear"": ""2023"",
""planEndDate"": ""30/09/2023"",

""financialData"": {
""requirements"": {
""totalRequirements"": 376729201,
""breakdown"": {
""byOrganization"": {
""3"": [
{
""clusterId"": 6760,
""globalClusterId"": 26480,
""requirements"": 700000
}
],
""8"": [
{
""clusterId"": 6760,
""globalClusterId"": 26480,
""requirements"": 1065690
}
],
""164"": [
{
""clusterId"": 6766,
""globalClusterId"": 11,
""requirements"": 1511500
},
{
""clusterId"": 6765,
""globalClusterId"": 4,
""requirements"": 620082
}
],
""165"": [
{
""clusterId"": 6766,
""globalClusterId"": 11,
""requirements"": 1777350
}
],
""758"": [
{
""clusterId"": 6764,
""globalClusterId"": 13,
""requirements"": 162000
},
{
""clusterId"": 6764,
""globalClusterId"": 12,
""requirements"": 30000
},
{
""clusterId"": 6764,
""globalClusterId"": 10,
""requirements"": 40000
}
],
""845"": [
{
""clusterId"": 6763,
""globalClusterId"": 7,
""requirements"": 1182703
}
],
""880"": [
{
""clusterId"": 6764,
""globalClusterId"": 10,
""requirements"": 127207
},
{
""clusterId"": 6764,
""globalClusterId"": 12,
""requirements"": 123466
},
{
""clusterId"": 6764,
""globalClusterId"": 13,
""requirements"": 123467
}
],
""928"": [
{
""clusterId"": 6764,
""globalClusterId"": 10,
""requirements"": 1775615
}
]

}
}
}
}
},
{
""planId"": 789,
""name"": ""test2"",
""planType"": ""plan"",
""financialData"": {
""requirements"": {
""totalRequirements"": 1311953516,
""breakdown"": {

""byOrganization"": {
""173"": [
{
""clusterId"": 6775,
""globalClusterId"": 13,
""requirements"": 296940
},
{
""clusterId"": 6776,
""globalClusterId"": 11,
""requirements"": 692860
}
],
""1207"": [
{
""clusterId"": 6775,
""globalClusterId"": 12,
""requirements"": 400000
},
{
""clusterId"": 6775,
""globalClusterId"": 10,
""requirements"": 400000
}
],
""1472"": [
{
""clusterId"": 6779,
""globalClusterId"": 26480,
""requirements"": 2035000
}
],
""2178"": [
{
""clusterId"": 6776,
""globalClusterId"": 11,
""requirements"": 4700000
},
{
""clusterId"": 6770,
""globalClusterId"": 3,
""requirements"": 1583400
},
{
""clusterId"": 6775,
""globalClusterId"": 14,
""requirements"": 2500000
},
{
""clusterId"": 6775,
""globalClusterId"": 10,
""requirements"": 1000000
},
{
""clusterId"": 6772,
""globalClusterId"": 6,
""requirements"": 875176
},
{
""clusterId"": 6769,
""globalClusterId"": 2,
""requirements"": 103600
}
],
""2297"": [
{
""clusterId"": 6778,
""globalClusterId"": 8,
""requirements"": 23993118
}
],
""2404"": [
{
""clusterId"": 6775,
""globalClusterId"": 15,
""requirements"": 372932
}
],
""2849"": [
{
""clusterId"": 6775,
""globalClusterId"": 12,
""requirements"": 582367
},
{
""clusterId"": 6776,
""globalClusterId"": 11,
""requirements"": 1985276
},
{
""clusterId"": 6772,
""globalClusterId"": 6,
""requirements"": 20000000
}
],
""12882"": [
{
""clusterId"": 6773,
""globalClusterId"": 7,
""requirements"": 107489
}
],
""12884"": [
{
""clusterId"": 6775,
""globalClusterId"": 15,
""requirements"": 100000
}
],
""12898"": [
{
""clusterId"": 6769,
""globalClusterId"": 2,
""requirements"": 51000
}
]
}
}
}
}
}
],
""meta"":{""language"":""en""}},
""status"":""ok""}
    
    "),
    data = Source[data],
    planData = data[planData],
    #"Converted to Table" = Table.FromList(planData, Splitter.SplitByNothing(), null, null, ExtraValues.Error),
    #"Expanded Column1" = Table.ExpandRecordColumn(#"Converted to Table", "Column1", {"planId", "name", "planType", "planCostingType", "planYear", "planEndDate", "financialData"}, {"planId", "name", "planType", "planCostingType", "planYear", "planEndDate", "financialData"}),
    #"Expanded financialData" = Table.ExpandRecordColumn(#"Expanded Column1", "financialData", {"requirements"}, {"requirements"}),
    #"Expanded requirements" = Table.ExpandRecordColumn(#"Expanded financialData", "requirements", {"totalRequirements", "breakdown"}, {"totalRequirements", "breakdown"}),
    #"Expanded breakdown" = Table.ExpandRecordColumn(#"Expanded requirements", "breakdown", {"byOrganization"}, {"byOrganization"}),
    #"Replaced Value" = Table.ReplaceValue(#"Expanded breakdown",each [byOrganization],each Record.ToTable([byOrganization]),Replacer.ReplaceValue,{"byOrganization"}),
    #"Expanded byOrganization" = Table.ExpandTableColumn(#"Replaced Value", "byOrganization", {"Name", "Value"}, {"Name.1", "Value"}),
    #"Expanded Value" = Table.ExpandListColumn(#"Expanded byOrganization", "Value"),
    #"Expanded Value1" = Table.ExpandRecordColumn(#"Expanded Value", "Value", {"clusterId", "globalClusterId", "requirements"}, {"clusterId", "globalClusterId", "requirements"})
in
    #"Expanded Value1"

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