Suppliers can be changed even after purchase requisition has been authorized.

Hi,

As you mentioned  "Allow Changes after Authorization" is for the monetary values, and might affect part PR lines when there are supplier for purchase part records, but for no part it’s irrelevant.

It is not always that you can change the supplier in a authorized no part PR line.

You should not be able to modify the supplier from a authorized no part PR line when (in IFS words) that affects the previous authorization. This basically mean if the routing template used to authorize is not valid after the supplier change, it will not be allowed.

Some examples for you below:

• There are 2 PR authorization rules, RULE1 for SUPPLIERA and RULE2 for SUPPLIERB. Both are using TEMP1 as routing template. In this case, no part requisition line authorized with RULE1 will allow changing the supplier to SUPPLIER2--- routing template remains as  TEMP1 
• There are 2 PR authorization rules, RULE1 for SUPPLIERA, with routing template TEMP1 and RULE2 for SUPPLIERB, using TEMP2 as routing template. In this case, no part requisition line authorized with RULE1 will not allow changing the supplier to SUPPLIER2---routing template changes from TEMP1 and TEMP2 
• You have one PR authorization rule that has ‘apply regardless of supplier’ marked. System will allow changing the supplier in the authorized no part requisition line. (This is the setting you have)--- routing template remains as TEMP1 
• You have one PR authorization rule that has ‘apply regardless of supplier’ cleared. You have SUPPLIERA in PR authorization rule/Suppliers tab. System will not allow changing the supplier from SUPPLIERA to SUPPLIERB in the authorized no part requisition line. ---routing template changes from TEMP1 to Null