Hello,
I have created a batch class that will take a case and related case data like task, atttachment, etc.
Then that data is being transfered/Shared with Partner connection.
But on executing the batch class  if i comment- down the Task, then the case is shared with partner connection but the Attachments is not.
And if I execute the code with the Task as uncommented the it gives error like this :

20:46:15:070 USER_DEBUG [75]|DEBUG|Record Share Error:Insert failed. First exception on row 1; first error: INVALID_PARTNER_NETWORK_STATUS, invalid status for partner network operation: []

Code - Batch Class:

global class SFConnectionFromAToB implements Database.Batchable<sObject> {
    global Date fromDate= date.newInstance(2023,01,09);
    global Date toDate;
    global List <PartnerNetworkRecordConnection> prncList = new List<PartnerNetworkRecordConnection>();
    global Id connectionId = [Select Id, ConnectionStatus, ConnectionName From PartnerNetworkConnection Where ConnectionName = 'MyConnection' AND ConnectionStatus = 'Accepted'].Id;
    
    global Database.QueryLocator start(Database.BatchableContext BC){
        system.debug('inside start');
        String queryString = 'SELECT Id, (SELECT Id FROM Attachments), (SELECT Id FROM CaseComments), (SELECT Id FROM Events), (SELECT Id FROM Tasks) FROM CASE WHERE Id=\'5002i00000C3e4bAAB\'';
        system.debug('inside start '+queryString);
      	return Database.getQueryLocator(queryString);
   }

   global void execute(Database.BatchableContext BC, List<sObject> scope){
       system.debug('inside exec '+scope);
       
       for(Case cs : (List<Case>)scope){
           prncList.add(new PartnerNetworkRecordConnection(
               ConnectionId = connectionId,
               LocalRecordId = cs.Id,               
               SendClosedTasks = true,
               SendOpenTasks = true,
               SendEmails = true));
           
       		if(!cs.Attachments.isEmpty()){
               for(Attachment att : cs.Attachments){
                   prncList.add(new PartnerNetworkRecordConnection(
                       ConnectionId = connectionId,
                       ParentRecordID = cs.Id,
                       LocalRecordId = att.Id
					   SendEmails = true));
               }
           }
           
           if(!cs.Tasks.isEmpty()){
               for(Task tsk : cs.Tasks){
                   prncList.add(new PartnerNetworkRecordConnection(
                       ConnectionId = connectionId,
                       LocalRecordId = tsk.Id,
                       ParentRecordID = cs.Id,
                       SendEmails = true));
               }
           }
       }
       
       if(!prncList.isEmpty()){

            try{
                system.debug('prncList : '+prncList);
                upsert prncList;
            }
            catch(System.Dmlexception dmlExceptionInstance){
                System.debug('Record Share Error:' + dmlExceptionInstance.getMessage());
            }
        }
   }

   global void finish(Database.BatchableContext BC){
       
   }
}

Please guide me in this. Thanks.