What to do when you can't validate an invoice?

Don't panic, there are some things you can do to solve your stamping problem.

How do you stamp an invoice?

If you find yourself lost in the world of electronic accounting in 2018, we explain what the stamping process is. Basically, the SAT wants to put its seal of authenticity on the documents that concern it (invoices, honorarium receipts, credit notes, debit notes, donations, etc...), how does it do it? There is a verification system called iTimbre, which verifies the RFC as real, that it is not a duplicate document and that it complies with the Appendix 20.

How to stamp an invoice with SAP

There are 2 ways to stamp an invoice in SAP, through a PAC or natively from the system. In this video you can see how to do it according to the system you have:

What to do when you can't stamp an invoice?

When you can't stamp an invoice from your system, you may have to delay invoice submissions for several days, that advances, cancellations, and payment complements are also delayed, and this may be because the SAT lost connection with your system, because the PAC you normally use crashed, because the stamping time decreased and is taking longer than normal.

What you can do in these cases is:

• Talk directly to your partner. If you don't know who your Partner is, write to us hereYour partner will take care of supporting you in resolving the problem, which may range from the accumulation of a file queue to the breakdown of a process.
• You can also restart the system, this will help you restore the system's initial configuration. Now also consider that some PACs take longer than others, in case the system has crashed, you can have a backup PAC to use in these cases.

Systems to facilitate invoice stamping

What if I told you there's a system that can connect with your ERP that you can use and stamp without interruptions? This is the case of multi PACs, they are developments that have several PACs (multiple stamps), which are used according to availability. That is, if one doesn't work, you can continue with another and so on.

Meet PAC Simple

There are some options on the market that have this function, integrated with SAP they are the least, however you can review the offer of each one online or with your Partner, one of our favorite tools currently is called PAC Simple, it allows you to do the following:

• Non-stop, greater availability
• Automatic PAC change
• Open stamp payment system with payment after due date*
• Direct debit
• To be able to provide service of online invoicing to your clients
• Centralize / simplify PAC and development provider procedures
• 200% faster than SAP's invoicing model and other market addons
• Online and simple XML and PDF electronic proof consultation
• No investment in infrastructure
• Simplified proof download
• More secure, data is encrypted with AES-256 algorithm.
• Tax vault and infinite storage.
• Simplicity when forwarding from SAP an email to your clients.
• Minimum technical support requirements
• Modular, you can use a simple PAC partially or totally
• Invoice
• Credit note
• Payment complement
• Cancellations

How does it work?

The system allows you to issue your invoice from SAP or from your point of sale (this must be configured according to the system you use), then send the information from SAP to PAC simple, which is where the system is stamped with any of the available PACs, you can choose these according to reliability or price. Invoices can also be customized.

Regarding architecture, this is how the system operates:

The web service architecture is slightly different, however, it works in a similar way.