having an issue while trying to publish my offer onto ebay, using publish offer method.

[sabbashop]

Hello , 

I am having an issue while trying to publish an offer created via create offer using the restful api, please find the following error that I am getting -

{"errors":[{"errorId":25001,"domain":"API_INVENTORY","subdomain":"Selling","category":"REQUEST","message":"A system
error has occurred. Internal Server Error"}]}

This is my offer, I used get offer to show my offer details here - 

{
"offerId": "361160902016",
"sku": "3000055, 001A-16",
"marketplaceId": "EBAY_CA",
"format": "AUCTION",
"listingDescription": "<p >Testing</p>",
"pricingSummary": {
"auctionStartPrice": {
"value": "6.88",
"currency": "CAD"
}
},
"listingPolicies": {
"paymentPolicyId": "191627031014",
"returnPolicyId": "242291086014",
"fulfillmentPolicyId": "235564782014"
},
"categoryId": "2540",
"merchantLocationKey": "Denison",
"tax": {
"applyTax": false
},
"status": "UNPUBLISHED",
"listingDuration": "DAYS_5",
"includeCatalogProductDetails": true,
"hideBuyerDetails": false
}

[sabbashop]

It would be of great help, if someone can tell me what's wrong here