diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
index fe96d976..9a90457c 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
@@ -135,6 +135,8 @@ public class EssService {
 		BizAssertions.assertNotNull(signPerson, "当前签署人员未加入单位, 无法签署");
 		EssContract contract = essContractDao.getForUpdateOrThrow(request.getEssContractId());
 		BizAssertions.assertFalse(contract.isFinalState(), "合同已是最终状态 {}, 无法签署", contract.getState());
+		Approver approver = contract.getApproverOrThrow(request.getRecipientId());
+		BizAssertions.assertFalse(approver.isSignPersonPreset(), "非动态签署人不能使用该接口签署");
 		if (contract.getConstraint() == Constraint.ONE_PERSON_PER_ORG) {
 			BizAssertions.assertFalse(contract.isOrgSigned(request.getOuId()), "该单位已签署, 无法再次签署");
 			contract.getOrCreateAssignment().getSignPerOrgs().find(request.getOuId()).ifPresent(org -> {
@@ -153,10 +155,7 @@ public class EssService {
 		if (request.getEndpoint() != SignUrlEndpoint.PC)
 			return essClient.createSignUrls(superAdmin, contract.getEssContractId(), request.getRecipientId(),
 				signPerson);
-		Approver approver = contract.getApproverOrThrow(request.getRecipientId());
-		if (!approver.isSignPersonPreset())
-			essClient.createFlowApprovers(superAdmin, contract.getEssContractId(), request.getRecipientId(),
-				signPerson);
+		essClient.createFlowApprovers(superAdmin, contract.getEssContractId(), request.getRecipientId(), signPerson);
 		return essClient.createPcSignUrl(superAdmin, contract.getEssContractId(), signPerson);
 	}