# Invalid Digital Signature Error

**URL:** <https://zatca1.discourse.group/t/invalid-digital-signature-error/8879>\
**Category:** Signing process\
**Created:** [October 27, 2025, 7:44am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879 "2025-10-27T07:44:16Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mreda100](https://dub1.discourse-cdn.com/flex013/user_avatar/zatca1.discourse.group/mreda100/32/1324_2.png) [@Mreda100](https://zatca1.discourse.group/u/Mreda100)\
**Post date:** [October 27, 2025, 7:44am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879/1 "2025-10-27T07:44:16Z")

</div>

Dear ZATCA Support Team,

We are currently experiencing the following issue across all our clients when submitting invoices to ZATCA:

`errorMessages: [`  
`{`  
`type: “ERROR”,`  
`code: “invalid-digital-signature”,`  
`category: “SIGNATURE_ERRORS”,`  
`message: “Invalid digital signature”,`  
`status: “ERROR”`  
`}`  
`]`  
`status: “ERROR”`  
`HTTP Status: 400`  
`Message: “submitted request is invalid”`

---

<div class="post-metadata">

**Author:** ![sergei.shishov](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@sergei.shishov](https://zatca1.discourse.group/u/sergei.shishov)\
**Post date:** [October 27, 2025, 8:22am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879/2 "2025-10-27T08:22:51Z")

</div>

@Ankit.K.Tiwari ,

We are receiving exactly the same error:

```auto
{
    "validationResults": {
        "infoMessages": [
            {
                "type": "INFO",
                "code": "XSD_ZATCA_VALID",
                "category": "XSD validation",
                "message": "Complied with UBL 2.1 standards in line with ZATCA specifications",
                "status": "PASS"
            }
        ],
        "warningMessages": [],
        "errorMessages": [
            {
                "type": "ERROR",
                "code": "invalid-digital-signature",
                "category": "SIGNATURE_ERRORS",
                "message": "Invalid digital signature",
                "status": "ERROR"
            }
        ],
        "status": "ERROR"
    },
    "reportingStatus": "NOT_REPORTED"
}

```

Could you please clarify the nature of this error and how to fix it? I assume all clients of us are affected. We are using self-crafted solution and not using SDK at all. But it was working for us for the last 2 years without issues.

It would be nice if you can clarify what is wrong with the signature and how to fix it.

– Sergei

---

<div class="post-metadata">

**Author:** ![Majd\_Alawadi](https://dub1.discourse-cdn.com/flex013/user_avatar/zatca1.discourse.group/majd_alawadi/32/1518_2.png) [@Majd\_Alawadi](https://zatca1.discourse.group/u/Majd_Alawadi)\
**Post date:** [October 28, 2025, 11:11am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879/3 "2025-10-28T11:11:59Z")

</div>

Hi Sergei,

The rollback has been completed, and everything is working as expected now.

Best regards,

---

<div class="post-metadata">

**Author:** ![Majd\_Alawadi](https://dub1.discourse-cdn.com/flex013/user_avatar/zatca1.discourse.group/majd_alawadi/32/1518_2.png) [@Majd\_Alawadi](https://zatca1.discourse.group/u/Majd_Alawadi)\
**Post date:** [October 28, 2025, 11:12am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879/4 "2025-10-28T11:12:00Z")

</div>

Hi Mreda,

The rollback has been completed, and everything is working as expected now.

Best regards,

---

<div class="post-metadata">

**Author:** ![sergei.shishov](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@sergei.shishov](https://zatca1.discourse.group/u/sergei.shishov)\
**Post date:** [October 29, 2025, 7:55am UTC](https://zatca1.discourse.group/t/invalid-digital-signature-error/8879/5 "2025-10-29T07:55:52Z")

</div>

Hi @Majd_Alawadi ,

As it was rollback, it means these changes will be deployed sooner or later. Should ZATCA team notify us about it please, that we have time to prepare and validate our setup.

– Sergei