Unable to create return order for channelReturnId : [ ], due to invalid quantity provided in request
for globalSkus : 
This happened because the return data is already present in the system for this Order. Please check in the report 'Returns: Return Order Report Item Level - WMS' whether the data is present.
If the data is present and still you want to upload the data, Please cancel the already existing data using the below option
Error "Duplicate TrackingIds for Return-OrderId: 6673825826 " on CIMS Return order upload screen
The same return order is mapped against the multiple TrackingIds. Please check the return upload file sheet for duplicate TrackingIds.
This happens mostly when the Forward order id is populated against the return order id column.
Error "Error in Row Number : 73 , Listing already exists for globalSkuId: 100015588, channelId : PAYTM, channelSkuId : 218086174 " while doing listing upload
Check for the channel SKU id in the system. This might be present already.
If it is not present in the system already, then the channel SKU id is present more than once in the uploading file.
Please remove the duplicate and try uploading.
Error "Duplicate Channel Orders for Return-OrderId: <return order id>" while uploading RTO file in CIMS
The same return order is mapped against the multiple Channel orders. This happens mostly when the wrong columns are populated against Channel order Id or Return Order id. Please check for this issue in the return upload file.
Error "Master data missing at MDM for 53497534543, 9345739539" while doing listing upload
This error may be encountered when you are trying to upload a CIMS Listing file for a Client-Channel Pair ( Mapping of Marketplace SKU to Client SKU ), this error signifies that the product master data does not exist in the system for the Client SKU you are trying to upload.
You can find the template for product master data in the Assure Onboarding Manual under SKU Master Data. Please upload it in, Assure > OMS > Products.
Error "Channel Serial No./Channel SKU id not found in the system for Client SKU 890534583458"
This error can be encountered when we do not have the knowledge of the Marketplace SKU against your Client SKU (generally EAN). Add the details under CIMS > Manage Listing > Select the Client and Channel > Upload Listing for the corresponding Client SKU ID against the Marketplace SKU Id according to the template.
You can also find the templates specific to a marketplace in the Assure Onboarding Manual under E-commerce Channels.
Also, Client SKU can be looked up in the Report Standard Storage SKU Master OMS.
Error "Channel SKUs already in system IITRSR32394964, NRIITRSR32394967, NRIITRSR32394980, NRIITRSR32394981, NRIITRSR32394982" on Listing Upload Screen.
This happens because some of the channel SKUs are already uploaded to the system. Please download the report CIMS Snapshot. By using this report, please remove the channel SKUs which are already in the system from the uploading list. Please try uploading again with the list.