If you encounter a failed Replication Solution and the error description in Execution History > Error Details is similar to the error shown below,  then you may have attachments or data that exceeds the Microsoft Dynamics CRM SDK buffer limits.

Error: Failed to allocate a managed memory buffer of 268435456 bytes. The amount of available memory may be lowThe error is being generated because the Microsoft Dynamics CRM server the TIBCO Scribe® Online Agent is trying to connect to doesn't have enough memory to process the request.

If you can, remove the extraneous data from Dynamics CRM or omit the entity from your entity selection list in the TIBCO Scribe® Online Replication Solution configuration to alleviate the exception. However, if you need immediate support please contact Microsoft.

For additional information, see the following in TIBCO Scribe® Online Help:

TIBCO Scribe Online Connector For Microsoft Dynamics 365
Selecting Source Entities For Replication Solutions