When we receive a receipt in my receipts we are unable to create receipt

Summary:

When receiving the QTY/AMT, an error appears stating: 'We couldn't create the receipt in RSSP this is happening when we are creating an receipt with details on my Receipt in RSSP page

We have created PO with receipt Routing as Direct Delivery but still when we create a receipt in my receipts (new) with receipt details system shows error as "We couldn't create the receipt " Please try again later. If the issue persists, contact your help desk. 

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):