source to target data is getting loaded partially via IICS

Hello,

i'm fairly new to Anaplan but come from BI products world. I have a situation, an Import action is created in Anaplan dev. This action picks up the .csv file from source location (This has been working perfectly fine in our environment for last 4 years) and loads it in to one of the Modules. This process has been automated in IICS and works as expected in Dev environment.

Here comes the issue:

Push this action using compare sync option from Dev to UAT for Anaplan Action. Using Import/Export option from IICS, move the job. There are no issues seen.

Now try to run this job from IICS, there is an error seen as "Operation failed: com.informatica.adapter.sdkadapter.exceptions.MetadataAccessException: [SDK_APP_COM_20000] error [null]." If we try to select the target action or source file, they are able to fetch in correctly. research on the blogs point that the .csv file not available on the Anaplan, if we try to load manually using the actions in Model there is an error as file doesn't exist.

Has anyone seen this kind of issue? I have heard that getting a support from the product front takes a longer than usual time. Any help from the experts here is highly appreciated. Thank you in advance.