Export DSE to Excel Issue : Error accessing data store entity?

a!queryLogicalExpression(
operator:"AND",
filters: {
a!queryFilter(
field:"primaryBranch",
operator:"=",
value:ri!settingJson.primaryBranch,
applyWhen: not(
rule!AF_RULE_General_isBlank(ri!settingJson.primaryBranch)
)
),
a!queryFilter(
field:"statusDesc",
/* Goldfish TCO-23312 Updated the operator to "in" for multi dropdown */
operator:"in",
value: a!forEach(
items: ri!settingJson.status,
expression: trim(fv!item)
),
applyWhen: not(
rule!AF_RULE_General_isBlank(ri!settingJson.status)
)
),
a!queryFilter(
field:"statusCategory",
operator:"=",
value:ri!settingJson.stage,
applyWhen: not(
rule!AF_RULE_General_isBlank(
ri!settingJson.stage
)
)
),
a!queryFilter(
field:"relationshipOwner",
operator:"=",
value:ri!settingJson.roName,
applyWhen: not(
rule!AF_RULE_General_isBlank(
ri!settingJson.roName
)
)
),
a!queryFilter(
field: "teamCode",
operator: "in",
value: ri!settingJson.teamCode,
applyWhen: not(
rule!AF_RULE_General_isBlank(
ri!settingJson.teamCode
)
)
),
a!queryFilter(
field:"referralCreatedBy",
operator:"=",
value:ri!settingJson.createdBy,
applyWhen: not(
rule!AF_RULE_General_isBlank(
ri!settingJson.createdBy
))
),
a!queryFilter(
field: "createdDate",
operator: if(
and(
not(rule!AF_RULE_General_isBlank(local!fromDate)),
rule!AF_RULE_General_isBlank(local!toDate)
),
">=",
if(
and(
rule!AF_RULE_General_isBlank(local!fromDate),
not(rule!AF_RULE_General_isBlank(local!toDate))
),
"<=",
"between"
)
),
value: if(
and(
not(rule!AF_RULE_General_isBlank(local!fromDate)),
rule!AF_RULE_General_isBlank(local!toDate)
),
local!fromDateToDateTime,
if(
and(
rule!AF_RULE_General_isBlank(local!fromDate),
not(rule!AF_RULE_General_isBlank(local!toDate))
),
local!toDateToDateTime,
{
local!fromDateToDateTime,
local!toDateToDateTime
}
)
),
applyWhen: or(
not(
rule!AF_RULE_General_isBlank(ri!settingJson.applicationCreatedDateFrom)
),
not(
rule!AF_RULE_General_isBlank(ri!settingJson.applicationCreatedDateTo)
)
)
)

}

)

It's working when i use a!exporttoDSE, can you have any suggestion on deleting the exported file or  all the files in the folder at once? Which is the requirement for my story and i am not saving the doc id in DB

What I have done before is to make sure I always put the file in a temporary folder I make. Then I have a process running nightly or weekly which deletes all documents in the folder.